Interrogate a ZonedDateTime asking if in standard time or in Daylight Saving Time (DST)

Question

How to ask a java.time.ZonedDateTime object if Daylight Saving Time (DST) applies to its moment or if standard time applies?

score 4 · Accepted Answer · edited May 23 '17 at 11:53

4

@Jon's answer is good. Just want to mention there is ZoneRules#isDaylightSavings available.

ZonedDateTime zdt = ...;
ZoneRules rules = zdt.getZone().getRules();
boolean isDst = rules.isDaylightSavings(zdt.toInstant());

And possible duplicate question here.

edited May 23 '17 at 11:53

Community

answered Nov 04 '16 at 20:31

Terry Li

I looked on ZonedDateTime, ZoneId and ZoneOffset, but failed to do so on ZoneRules. Doh. – Jon Skeet Nov 04 '16 at 21:15
@JonSkeet I just Googled "ZonedDateTime isDaylightSaving"...and I got lucky :) – Terry Li Nov 04 '16 at 21:20

1 Answers1