Onor.io
A colleague spotted an odd thing that neither of us can figure out:
iex(1)> Timex.timezone(“America/Chicago”, {2015,4,12})
#<TimezoneInfo(America/Chicago - CDT (-05:00:00))>
iex(2)> Timex.timezone(“America/Chicago”, {2015,1,12})
#<TimezoneInfo(America/Chicago - CST (-06:00:00))>
I would have expected all calls to timezone in Chicago to be -06:00:00. Is the difference due to Daylight Savings Time or something else?
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jerdew
DST is probably the cause, but it could possibly be weirder things .. timezones are strange. you can set the timezone to a variable, and then examine its properties to see its local offset (offset_std) and when that offset is valid from/until:
Onor.io
Yeah that sure looks like it’s Daylight Savings Time. Thanks for the reply @jerdew!