Summer to Winter time = last Sunday in October at 1am UTC (that is 3am local time).
Western Europe Zone
“mode_eu-1” (England, Portugal, Ireland).
Winter to summer time = last Sunday in March at 1am UTC (that is
1am local time).
Summer to Winter time = last Sunday in October at 1am UTC (that
is 2am local time).
Eastern Europe Zone
“mode_east ” (Greece, Finland, etc).
Winter to summer time = last Sunday in March at 1am UTC (that is
3am local time).
Summer to Winter time = last Sunday in October at 1am UTC (that
is 4am local time).
East USA Zone
“mode_usae” (New York, Toronto, etc).
Winter to summer time = second Sunday of March at 2am local time.
Summer to Winter time = first Sunday of November at 2am local
time.
Central USA Zone
“mode_usac” (Chicago).
Winter to summer time = second Sunday of March at 2am local time.
Summer to Winter time = first Sunday of November at 2am local
time.
Mountain USA Zone
“mode_usam”
(Denver).
Winter to summer time = second Sunday of March at 2am local time.
Summer to Winter time = first Sunday of November at 2am local
time.
Pacific USA Zone
“mode_usap”
(Los Angeles).
Winter to summer time = second Sunday of March at 2am local time.
Summer to Winter time = first Sunday of November at 2am local
time.
Australia Zone
“mode_aus” (Sydney).
Winter to summer time = first Sunday in October at 2am local time.
Summer to Winter time = first Sunday in April at 3am local time.
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