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Dmitrii-I/timezones-POSIXct.R

Created May 2, 2017 17:50
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Weird timezone behavior POSIXct objects in R
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timezones-POSIXct.R
cat('Weird timezone behavior')
# Weird timezone behavior
(t1 <- as.POSIXct(c('2015-02-01 20:00', '2015-10-25 02:57'))) # CET CET
# [1] "2015-02-01 20:00:00 CET" "2015-10-25 02:57:00 CET"
(t2 <- as.POSIXct(c('2015-06-01 20:00', '2015-10-25 02:57'))) # CEST CEST
# [1] "2015-06-01 20:00:00 CEST" "2015-10-25 02:57:00 CEST"
(t3 <- as.POSIXct('2015-10-25 02:57')) # CEST
# [1] "2015-10-25 02:57:00 CEST"
t1[2] == t2[2]
# [1] FALSE
(t2 <- as.POSIXct(c('2015-06-01 20:00', '2015-10-25 02:57'))) # CEST CEST
# [1] "2015-06-01 20:00:00 CEST" "2015-10-25 02:57:00 CEST"
(t1 <- as.POSIXct(c('2015-02-01 20:00', '2015-10-25 02:57'))) # CET CET
# [1] "2015-02-01 20:00:00 CET" "2015-10-25 02:57:00 CET"
(t3 <- as.POSIXct('2015-10-25 02:57')) # CET
# [1] "2015-10-25 02:57:00 CET"
t1[2] == t2[2]
# [1] FALSE
t1[2] == t3
# [1] TRUE
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