ZODIAC 13 MOON CALENDAR CRIMES

1/21/2013

Astrology and the Zodiac Killer has been widely discussed regarding the Bay Area murders and the communications he mailed to the newspapers. Here we will concentrate on the 13 moon calendar, based upon a cycle of 4 weeks, forming a 28 day cycle (it takes 28 days for the moon to orbit the earth) over 13 moon phases, amounting to 364 days - the 365th day referred to as 'the day out of time,' and serves as a public holiday in some countries. But what has this got to do with the Zodiac Killer? It is believed by some that the Zodiac Killer committed his crimes on a full or new moon, but this was not the case. For example, the Blue Rock Springs Park attack on July 4th or 5th 1969 (as it occurred close to midnight) were neither a full moon or a new moon - only a waning gibbous moon. However, something does correlate with all four confirmed Zodiac attacks, in that they all occurred on DALI days. In other words, the 1st, 8th, 15th and 22nd day of each moon cycle. Therefore, the first day of each week of the 28 day cycle, represented by the Dali crosshairs symbol. Visit here for calendar and explanation. Leave this new window open on the calendar, to enter the relevant dates. There are 7 symbols of Dali, Seli, Gamma, Kali, Alpha, Limi and Silio representing each day of one week.

If we now we place the Zodiac crimes into place, beginning with the Lake Herman Road murders on December 20th 1968, which is 12/20, this falls on the first day of the week on the Dali line in position 8 of the Rythmic Moon. The Blue Rock Springs attack on July 4th 1969, which is 7/4, falls on the first day of the week on the Dali line in position 8 of the Cosmic Moon. The Lake Berryessa attack on September 27th 1969, which is 9/27, falls on the first day of the week on the Dali line in position 8 of the Electric Moon (remember the three circled 8's of the 'My name is' letter). Finally, the murder of taxicab driver Paul Stine on October 11th 1969, which is 10/11, and falls for the fourth time on the first day of a week on the Dali line in position 22 of the Electric Moon. For confirmation of the above, visit Spacestation Plaza and enter in all four complete dates, including the year, under where it says 13 Moon Natural Time Calendar. It can be seen that all the four confirmed Zodiac attacks occur at the beginning of the week on the 13 moon calendar, which if my mathematics are correct, produces odds of 2401 to 1.

Continuing this observation, to rule in or out any of the other touted Zodiac crimes, suggests that the Modesto abduction of Kathleen Johns, and the Cheri Jo Bates, Betsy Aardsma and Domingos/Edwards murders would all be ruled out on this basis. However, the Donna Ann Lass disappearance on September 6th 1970 and the Hood/Garcia murders would still remain a possibility. The disappearance and eventual murder of Judith Hakari on March 7th 1970, along with the murder of Nancy Bennallack on October 25th 1970 in Sacramento, both fall on the first day of the week in the 13 moon calendar and would also be ruled in - as well as the Sleeping Bag Murders sometime on the night of July 4th 1970.

In total, this would make 12 murders (9 attacks), that all fall on the first day of the 13 moon calendar week, represented by the Dali symbol. If we expand the search field to other potential Zodiac victims (detailed below), one can see the correlation of the data, with all the victims from December 20th 1968 to November 15th 1970 (just a 2-year period) being murdered on the first day of the 13 moon calendar, and all on Friday, Saturday and Sunday, possibly when the killer had finished his working week. This is either a highly credible argument or one hell of a statistical coincidence.

31 Comments

Theforeigner

1/27/2013 08:25:17 pm

On the Halloween Card, mailed on October 27th 1970, Zodiac had added what look like 13 Crescent Moons (also look like 13 eyes)
Zodiac actually only added 12 Crescent Moons/eyes due to that the eye in the hole, in the tree trunk, was already there on the original card.

judi

12/25/2014 06:17:04 am

What was the angle from Mount Diablo to the Blue Rock Springs area and what streets in Concord does it cross hair. I lived on the Corner of Clayton and Maynard as a little girl

Richard

12/25/2014 07:15:41 am

The angle clockwise on a compass is approximately 315 degrees or anticlockwise 45 degrees, by my estimation. It is difficult to guage exactly where it passes over using Google Maps, I would need a hand held map to plot the points more accurately, which I do not possess at this time. But it almost certainly would run over or very close to this intersection. Follow this link.
https://www.google.co.uk/maps/dir/Blue+Rock+Springs+Park,+650+Columbus+Parkway,+Vallejo,+CA+94591,+United+States/Mount+Diablo+State+Park,+96+Mitchell+Canyon+Road,+Clayton,+CA+94517,+United+States/Maynard+St,+Concord,+CA+94519,+USA/@37.8587112,-122.2354347,111596m/data=!3m1!1e3!4m20!4m19!1m5!1m1!1s0x808572965a4660cd:0x8ad17a1c21434740!2m2!1d-122.189859!2d38.125824!1m5!1m1!1s0x808ff43c6aaed623:0x832f041673ae6934!2m2!1d-121.912763!2d37.881806!1m5!1m1!1s0x808560b399d9877d:0x638a287730e0d68b!2m2!1d-122.0086752!2d37.9708325!3e0?hl=en

Caleb

9/10/2016 05:16:59 pm

Brian

12/7/2017 07:39:42 pm

Cheri Jo Bates died Sunday 30 October 1966: A Limi day, not a Dali day.
Santa Barbara, Robert Domingos & Linda Edwards: Tuesday 4 June 1963 Also a Limi day.
I wonder if Limi days were important to him in this earlier phase.

Cd link

8/22/2020 03:23:37 am

Simon

12/8/2017 12:18:02 am

"Therefore, all the four confirmed Zodiac attacks occur at the beginning of the week on the 13 moon calendar, which if the mathematics are correct, produces odds of 2401 to 1- which is pretty slim"

The mathematics aren't really correct. 2401 is 7*7*7*7, but the important number is 343 (7*7*7). The reason being, in probability terms, we do not care what day the first murder occurs on. We only care that the next three match it.

First murder occurs (day does not matter).

2nd murder occurs on same day (1 in 7)

3rd murder occurs on same day (1 in 7*7 is 1 in 49)

4th murder occurs on same day (1 in 49*7 is 1 in 343)

So the odds of all four occurring on the same day of the week (any day) is actually 1 in 343. Still impressive, but not as impressive as 1 in 2401.

Great work on the site, and it's not my intention to nitpick. Just thought you could add this to your considerations.

Nicke

12/16/2017 03:25:15 am

That depends. The first day may matter in this case since it just so happens that the sign of the Dali day looks very much like the sign of the Zodiac killer. The coincidence of the Dali symbol just happening to be basically the same as his chosen symbol if it wasn't intentional would be substantially much more than 7. Unless he in hindsight chose that symbol after discovering that he committed the first attack on a Dali day and liked the symbol so much that he copied it. Then you are correct, and that would be an interesting detail. As far as I know that symbol has never shown up in anything possibly connected to the Zodiac killer prior to the first confirmed attack so it's certainly a strong possibility.

Barbara Moskaitis

12/21/2017 08:09:07 pm

Just wondering if any of the suspects had a birthday on a Dali day, a december dali day, per the movie. Or was the movie saying Dec. 18, incorrect. They never give a birthday for each of the suspects.Just curious.

Richard

12/22/2017 01:25:08 am

Richard Gaikowski was born on March 14th 1936. This date matches the opening of the Mikado on March 14th 1885 in London. The birthday call. The movie date of December 18th is not based in fact.
"1 14 70 RE: SAN FRANCISCO AIRTEL DECEMBER TWENTY NINE LAST. On instant date Insp. (name redacted), Homicide Detail, San Francisco Police Department, confidentially advised that UNSUB, who identified himself as ‘Zodiac,' telephonically contacted attorney Melvin Belli's residence in effort to contact Belli. UNSUB was advised Belli was in Europe and stated, "I can't wait. Today's my birthday."

Richard

12/22/2017 01:26:31 am

March 14th is a Dali day.

Antares

1/24/2018 05:58:22 am

Hate to burst the bubble but this calendar wasn't invented until 1992 by a guy who turned his whole theory of the calendar into a board game and sold it. Therefore, the Zodiac couldn't have possibly known about it and planned his killings around it. The name "Dali" for the first day of the week is his invention and the symbol is not the Zodiac's symbol (where the cross hairs always were always extended outside the circle), but an astrological symbol for The Part of Fortune (the point in an astrological chart that is determined by the geometric distance between the Sun and Moon and that distances is added to the eastern horizon to determine the location). Zodiac did use the part of fortune symbol in his ciphers.

Furthermore the Moon's cycle is 29+ days not 28. If you have a 7 day week 28 day month calendar the first day of the week will always be the same. So will the second, third fourth etc. That's just arithmetic.

Admittedly that even using an ex post facto calendar that four killings occurred on the same day of the week is one helluva coincidence, but that is all it appears to be. The only other possibility I can think of is that Zodiac used a different 28 day month calendar, but I've yet to find one.

Look up Dr. Jose Arguelles, born Joseph Anthony Arguelles, (January 24, 1939 – March 23, 2011). for details on his calendar and the dates he published it.

There are numerous lunar calendars used throughout history. The Hebrews used one and so did Islam. They are all a bit different, but to my knowledge none are 28 days long. This one has no more to do with the Zodiac killings than St Patrick's Day.

Nicke

1/24/2018 07:05:21 am

You may be wrong that the Zodiac couldn't have known about the calendar because there's another possibility: That Arguelles was the Zodiac. From what I can gather he lived in California during the period of the murders. Did I just crack the case?

Antares

1/24/2018 09:51:17 am

Interestingly, that occurred to me, too. He is the right age. He does not look like the composite, but there is no guarantee the composite is accurate, or that he didn't look like it in the late 60s. However, Arguelles claimed his calendar was based on, among other things, DNA code, and precisely what he based it on may not have been known in the late 60s. In the late 60s no one knew anything about DNA outside of some very specialized scientists. The reason for the DNA inclusion is that his calendar is supposed to sync humans with real time and DNA is (I guess) a handy way to do that.

He was a new age wacko not a serial killer. If someone can show me that this calendar in some form or other (plagiarism is not out of the question with these guys) in the mid to late 60s, I'll change my mind. Right now I'm going by what he and his followers have said publicly about the calendar.

Antares

4/21/2018 05:41:01 pm

If the calendar appeared AFTER the known Zodiac killings, then he couldn't have known about it.

mercuryrules

7/10/2020 01:40:34 pm

Antares, you are right about this online calendar, and especially the designation "Dali Day." A fairly quick check of known Zodiac murders and the moon cycle seem far more erratic. 12-20-1968 is 1 day after the new moon. 7-4-1969 is 2 days before 3rd quarter. 9-27-1969 is 2 days after the full moon. 10-11-1969 is on the new moon. 9-7-1970 (day of Diane Lasse's last sighting) was 1 day before the first quarter. It's possible if we knew every single one of his crimes we might see a lunar pattern. It is possible Zodiac was using a system that coincides with the Dali Day calendar, but there is no way to know, without more information, why he chose that "pattern."

4/20/2018 01:56:45 pm

https://en.wikipedia.org/wiki/International_Fixed_Calendar

The 13 moon or month calendar has been around forever.

You just need to do a little Google search to find-out.

https://en.wikipedia.org/wiki/Calendar_reform

The one below this line is interesting.

http://www.sacredfire.net/calendar.html

Antares

4/21/2018 06:01:53 pm

>The 13 moon or month calendar has been around forever.<

Yes and they're all different. Every culture (often nomadic) that used a lunar calendar had one. The ancient Hebrews alone had several. Few, if any, were the same. However the particular calendar mentioned in the TV show is the creation of a particular man in 1992, and then turned into a board game. by which time I suspect the real Zodiac was dead. There is no "Dali Day" in any of the 13 month calendars I can find, except his.

The guys on the TV show didn't mention this at all other than allude to the fact the Dali Day business could be a coincidence. They know nothing about lunar calendars or astrological symbols. They just came up with something, hinted at it, and performed a hit and run.

Here is my question: has any serial killer anywhere or at any time ever scheduled his murders according to anything? For example, phases of the Moon, holidays, birthdays of people significant to him or her or of famous people? Has this ever happened? Some terrorist attacks are scheduled like this, but no murderous psychos that I know of do this. Has any murderer deliberately left actual clues that could lead to his capture or otherwise identify him? Murderers have taunted the police before and since, but have any of them ever identified themselves in code or otherwise,so that the police could catch them? I don't think so.

4/22/2018 02:18:31 pm

Who cares what it is called Dali day, Dooms day it's all the same signature day numerically. Math is math my friend. Please throw out that 1992 calendar. There are tons of 13 month calendars for you to research and help Richard Grinell find the Zodiac. I know you are frustrated but we got to stay with this. And, when one of us is going though a pissed off patch then the rest of us got to do something to try and change it with an encouraging word. It is a good thing that you pointed out the 1992 date on that calendar that everybody was stuck on. Now maybe someone can use the one 13 moon calendar the zodiac used to get our next lead. Remember this is a relay race. A 50 year relay race. As for your questions - I think you are as smart as those guys so my suggestion is who care what they say keep running your own race. Keep finding you own answers. Peace out.

Antares

4/23/2018 06:32:31 am

Let's try to put what I wrote in perspective. First, I'm not frustrated at all. If the tone of the post gives that impression, then I need to try to soften it. Second, I prefer to deal in facts rather than conjecture. So with that in mind let's go over the lunar calendar and the point I'm trying to make. The TV show pointed out, correctly as far as I can tell, that all or almost all of the murders took place on a Dali Day or the first day of the week of this particular lunar calendar. From this we are asked to believe that this day was deliberately selected by Zodiac to commit his killings. From that information it is presumed that we have learned something about his identity. At this point, this is all reasonable. Not conclusive, but reasonable.

However a little examination and this avenue is either a dead end or leads to nowhere. First, from what I see the lunar calendar used by the TV investigators wasn't "invented" until 1992, long after the last Z killing. Clearly it is impossible for Z to use something to schedule his killings that hadn't been invented at the time of the killings. But as the TV investigators pointed out, if Z didn't use this calendar, it is an off the charts coincidence. This is true, so we need to look a little deeper. I couldn't find a lunar calendar to match this one. However, that doesn't mean one doesn't exist. Lunar calendars were common among nomadic people and they didn't necessarily match. The ancient Hebrews had several, for example. Trying to pin point most if not all lunar calendars to see if any match this one, is I admit, more work than I'm willing to do and maybe more than I'm able to do.

But looking at Arguelles, we can come up with two plausible scenarios. He either invented his own calendar, in which case we can drop trying to link Z to it. Or Arguelles is a bit of a new age fraud (lots of those around), and he simply found a lunar calendar, changed the names of the days of the week, and claimed it as his own. However, speaking of coincidences, we have to believe that Z found the same lunar calendar and for whatever reason adopted it and used it to time his killings, presumably so he wouldn't get caught. For whatever reason, this turned out always to be a Dali Day. I suggest that coincidence is as great as it is that all the killings occurred on the Dali Day by happenstance. The question, then, is even if we know that Z deliberately selected the same day for his killings, does that help us identify him? I think not. Where can we go with it?

This brings me to the questions I asked, and perhaps I should have phrased them as statements not questions. Z is not the first guy to taunt the police with notes. However, to my knowledge, no serial killer ever scheduled his murders according to any calendar. The closest we have for that is some terrorist attacks were scheduled to match historical or religious dates, but no serial killers. No serial killer ever supplied the police with legitimate clues to his identity. None of the "solutions" to the codes have given us a solid lead much less the name of the killer. There could be accidental clues to his identity and for that reason law enforcement has tried to crack them, but at this point, several decades after they were mailed to the police, it might be reasonable to assume this, too, is a dead end because no one has cracked it and because there is no known case of a killer deliberately revealing his identity to the police.

Unfortunately, this leaves very little to work with. A fresh look at the credible evidence may well reveal more than banging reads against a wall trying to crack a code that either is gibberish, or reveals nothing of value.

4/23/2018 12:26:56 pm

The calendar Arguelles seems to have taken his from was devised by Auguste Comte in 1849. It was based on a 364-day year which included the one or two "blank" days that Abbé Mastrofini, an Italian Roman Catholic priest, had devised 15 years before. Each of the 13 months had 28 days and exactly four weeks. I miss read you being pissed off - My bad.

https://en.wikipedia.org/wiki/Positivist_calendar

Antares

4/23/2018 02:32:06 pm

Great find. I’ve heard of Comte but forgotten the details. I’ll check this out and get back on it. Good job.

Antares

4/24/2018 04:04:20 am

I'm in the middle of something that can't be put aside, so I've only managed to steal a little bit of time this morning. I will get back to this.

As suggested Arguelles aparently plagiarized the calendar. Comte has nothing to do with the occult or astrology. He was a 19th century philosopher who is considered the first philosopher of science as we currently understand that term.
Comte apparently created this calendar for two main reasons: 1) to symbolize a break with the past 2) promote the use of a mathematically neat well organized calendar. His "motto" as it were was "Progress and Order," which if it sounds a bit Orwellian we might consider Comete influenced Marx.

The names of the days of the week in Arguelles' calendar were his own invention. Comete apparently named the days of the week after famous people. I didn't find those names, yet. Regardless, if Z used this calendar it really doesn't matter what the name of the day of the week is. Assuming he did this deliberately, the next step might be to determine what Comete's calendar could have meant to him - if anything.

Thanks to the efforts of BB we now now Z could have used the same calendar as proposed by the TV show, albeit one with a different purpose. Arguelles, to me anyway, seems like a fairly typical new age wacko. If someone wants to pursue the (remote) possibility that Arguelles is the Zodiac Killer, then the next step would be to try to determine Arguelles whereabouts when known Z murders took place. If he wasn't in the area, he can be dismissed. I have no idea how to go about doing that.

When I get the chance I'm going to see if there is more to Comete's calendar than I've found so far and look for a possible linkage.

4/24/2018 04:34:27 pm

Antares - Thank You soooooooo sooooooo much for your praise! You made my day!
There is one thing I have to correct for the record though. And that is that
Richard's 13 moon calendar theory was from 4 years before the History Channel.
The Hunt for the Zodiac show used Richard Grinell's Dali day Zodiac kills theory.
And, to my knowledge they have not credited him with that still to this day. But, if I am
able to remember civil law correctly there is a one year statute of limitation.
So, I think they still have time. I hope they contact him. Richard is the Man!

Toots

10/2/2018 08:01:04 pm

Interesting to note that the Apollo 8 mission was dubbed: Christmas at the Moon. The famous 'Earthrise' photo from Apollo 8, the first manned mission to the moon. The crew entered lunar orbit on Christmas Eve, Dec. 24, 1968.

The mission insignia...the triangular shape of the insignia symbolizes the shape of the Apollo Command Module (CM). It shows a red figure-8 looping around the Earth and Moon representing the mission number as well as the circumlunar nature of the mission. On the red number 8 are the names of the three astronauts

10/3/2018 11:10:12 am

Ted J Kaczynski - 13 characters or Theodore Kaczynski 17 across on ciphers

Ted made 16 attacks - That we know of. Odds are there are more - Those were just proveable.
He injured 23 and killed 3 - That we know of. Again, there are probably others.

From Wikipedia, the free encyclopedia
known as the Unabomber, is an American domestic terrorist, former mathematics professor, and anarchist author.

https://en.wikipedia.org/wiki/Ted_Kaczynski

Dates of his attacks given by Wikipedia on page 10and11, half of them correspond with your D-day theory. AND.
The others - happened the day before - which could be easily excused as the package arriving a little early.
Since mail is not always on-time. All those were hedged the day before D-day which points to him too. After all his Birth-day was the day before on May 22. I wonder what he put behind all his code in that Montana cabin?

10/3/2018 01:40:14 pm

Richard - the Exorcist letter symbol could be "Kaz" or Kazi short for Kaczynski

The "t" in ted could also be hidden in the Zodiac scope sign
and the paradice slaves southern cross sign.

Richard

10/3/2018 01:54:59 pm

That is if you believe Theodore Kaczynski was Zodiac, but unfortunately I don't BB. I don't doubt Mark Hewitt has created a credible book, for me however, I don't see a man sitting in jail for the rest of his life, not being tempted to admit he is Zodiac and placing himself back in the spotlight for years to come, slowly drip feeding all the mysteries of the ciphers, cards and murders. It would be an egotists dream. The alternative is wallowing away in his cell looking at four walls all day..

10/4/2018 01:03:02 pm

For a man like TK - prison is better than the dirty cabin.
Three hots and a cot. He has money on his books in Colorado - he would not want to go through the life threatening rigmarole that the legal system in America put's people through. Including family.

The rest of the service he is receiving, in his mind - not having to worry about bills.They even clean his shorts for him. The cooks and the other are his slaves and the cell is his paradice. Ted is happy. He is the loner in solitary confinement. He can write all day.

As far as not copping to it. I can tell you that he would put his family through hell - and if he told the world he was the bogeyman the air would go out of that balloon - whom ever is the Zodiac, they would not want all his efforts to go for not. And, I'm sure he wants to keep that mystique alive and therefor would never tell. To admit he is Zodiac would be suicide.

Kevin Schappert

2/3/2019 02:48:26 am

Hard evidence (handwriting, shoeprint) connects Zodiac to Bates, and Domingues murder eerily similar to Berryessa (same gun, same clothesline pieces, same remote venue). Those 2 are likely Zodiac.

6/18/2020 02:14:29 pm

I Agree - And there is 63 year old Vern C. Smith 6-3-63 stabbed in the back. He was 17 or 18 years old at the time.

Possible suspects 17 or 18 in 1963

James D. Phillips
Les Lundblad Jr.
Michael Bates

ZODIAC 13 MOON CALENDAR CRIMES

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