Calfornia, the US state with the highest population, seems to be one of the most regular timezone history, well represented by zone America/Los_Angeles. One exception has however been brought to my attention, which I report here, as a contribution to the completion of pre-1970 timezone history. # Information published to the Public Domain. # Palm Springs suffered under the shadow of Mt. San Jacinto and # decided to go on DST from 1946 Nov 17 for 120 days, # ending 1947 Mar 17. # Source: Beaver Valley Times, 1946 Nov 8, and other newspapers. # # Palm Springs is at 116w33. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Palm_Springs -7:36:12 - LMT 1883 Nov 18 12:23:48 -8:00 US P%sT 1946 Nov 17 02:00 -7:00 - PDT 1947 Mar 17 02:00 -8:00 CA P%sT 1967 -8:00 US P%sT