
The police logged the time of the threat in the Taraval District between 7:00am on March 13th 1978 and 12:30am on March 14th 1978. Therefore, the flower and threatening note must have been placed on her front gate during a 16 1/2 hour window of time. Sunset in San Francisco was 6:15pm, so if the perpetrator applied some caution, it is likely the note was pinned on her front gate sometime between 6:15pm and just after midnight. The phone call to the man in the Mission District was logged at 11:00pm, falling between these two times. Therefore, it is possible that these two "Zodiac Killer events" occurred within a reasonable time of one another - with 10pm to midnight being prime time for the Zodiac Killer under the cover of darkness. The individual who threatened the woman in the Taraval District could easily have made the phone call from this location. There was no need to travel to make the phone call to the Mission District.

If the author of the threatening note was the Zodiac Killer, did he target a random person, or did he choose somebody of significance that he knew would generate a response from the police and hopefully make its way into the newspapers. The last time a Zodiac note was found on a public street was on October 21st 1969, having been thrown from a car on Lake Mendocino Drive at 3:00 pm, just north of Ukiah, California (see newspaper clipping below). The note, attached to a twig, was thrown towards an eight-year-old girl with the crudely printed message "You're next - Z". The only difference between the note in the Taraval District of San Francisco and the note in Mendocino County was the signature, morphing from "You're next - Z" to "You're next (The Zodiac Killers)". The note in Mendocino County, whether the Zodiac or not, was seemingly piggybacking off the October 13th 1969 threat by the Zodiac Killer to target schoolchildren.
So did the woman he targeted with a note and flower in 1978 carry any significant value in his quest to hit the newspapers once again? Or did he just select a random member of the public, hoping his pseudonym alone was enough to generate the publicity he so badly craved? Or was it a hoaxer with nothing better to do with his life, who used the term "Zodiac Killers" to suggest he was separate to the original killer? Were the two occurrences in San Francisco on March 13th 1978 just coincidence? If not, we are back to where we started with two connected events, in which one appeared to pre-empt the message on the April 24th 1978 letter.
*The Taraval District is the city’s largest and most populous police jurisdiction, encompassing a large part of southwestern San Francisco. It is bordered by Golden Gate Park to the north, Ocean Beach to the west, Daly City to the south, and 7th Avenue down to Interstate 280 to the east. The district includes the inner and outer Sunset neighborhoods, as well as Parkside, Golden Gate Heights, Balboa Terrace, Ingleside Terrace, Monterey Heights, St. Francis Wood, Ingleside, Oceanview, West Portal, Lakeshore Acres, Country Club, Merced Manor, Park Merced, Edgehill, Laguna Honda, Lakeside, Merced Extension, Mount Davidson Manor and Sunset Heights. link.