note 108348 deleted from datetimezone.gettransitions by salathe

Note Submitter: wallyREMOVEMEkramer at gmail dot com ---- As of PHP 5.3 (April 2012), the array returned by unqualified getTransitions() for U.S. timezones has 185+ elements, including transitions back to 1901. Each daylight/standard change has an entry. Here is condensed output from print_r for 'America/Los_Angeles': index ts time offset isdst abbr 0 -2147483648 1901-12-13T20:45:52+0000 -25200 1 PDT 1 -1633269600 1918-03-31T10:00:00+0000 -25200 1 PDT 2 -1615129200 1918-10-27T09:00:00+0000 -28800 PST 3 -1601820000 1919-03-30T10:00:00+0000 -25200 1 PDT 4 -1583679600 1919-10-26T09:00:00+0000 -28800 PST 5 -880207200 1942-02-09T10:00:00+0000 -25200 1 PWT 6 -769395600 1945-08-14T23:00:00+0000 -25200 1 PPT 7 -765385200 1945-09-30T09:00:00+0000 -28800 PST 8 -687967200 1948-03-14T10:00:00+0000 -25200 1 PDT 9 -662655600 1949-01-01T09:00:00+0000 -28800 PST 10 -620834400 1950-04-30T10:00:00+0000 -25200 1 PDT 11 -608137200 1950-09-24T09:00:00+0000 -28800 PST 12 -589384800 1951-04-29T10:00:00+0000 -25200 1 PDT 13 -576082800 1951-09-30T09:00:00+0000 -28800 PST 14 -557935200 1952-04-27T10:00:00+0000 -25200 1 PDT 15 -544633200 1952-09-28T09:00:00+0000 -28800 PST ... (repetitious pattern omitted) 58 126698400 1974-01-06T10:00:00+0000 -25200 1 PDT 59 152096400 1974-10-27T09:00:00+0000 -28800 PST 60 162381600 1975-02-23T10:00:00+0000 -25200 1 PDT 61 183546000 1975-10-26T09:00:00+0000 -28800 PST 62 199274400 1976-04-25T10:00:00+0000 -25200 1 PDT 63 215600400 1976-10-31T09:00:00+0000 -28800 PST 64 230724000 1977-04-24T10:00:00+0000 -25200 1 PDT 65 247050000 1977-10-30T09:00:00+0000 -28800 PST ... 84 544615200 1987-04-05T10:00:00+0000 -25200 1 PDT 85 562150800 1987-10-25T09:00:00+0000 -28800 PST ... 122 1143972000 2006-04-02T10:00:00+0000 -25200 1 PDT 123 1162112400 2006-10-29T09:00:00+0000 -28800 PST 124 1173607200 2007-03-11T10:00:00+0000 -25200 1 PDT 125 1194166800 2007-11-04T09:00:00+0000 -28800 PST 126 1205056800 2008-03-09T10:00:00+0000 -25200 1 PDT 127 1225616400 2008-11-02T09:00:00+0000 -28800 PST ... 182 2088669600 2036-03-09T10:00:00+0000 -25200 1 PDT 183 2109229200 2036-11-02T09:00:00+0000 -28800 PST 184 2120119200 2037-03-08T10:00:00+0000 -25200 1 PDT 185 2140678800 2037-11-01T09:00:00+0000 -28800 PST The pattern extends into the future, but since daylight/standard transitions are subject to revision by U.S. Congress, expect future patches and updates to the table.