Tonight noticed the lights were not coming on as expected. Knew they would be later with the time change, However, when I looked into it further I noticed the Simple Lighting and RM Sunset triggers where happening about an hour late, even for the few days before the time change. The system log was showing sunset at 6:09 PM (Saturday) and 7:10 PM (tonight). However, devices I had tied to rules to turn on at sunset -10 mins were occurring at 6:59 PM and 8:00 PM, respectively. Seems to be about an hour lag between the system event log and the actual triggers. The system log times match other sources for the sunset time in our area. Any idea why the triggers are late?
I'm had a somewhat similar issue... I have Evening mode set to Sunset-30 and Night to Sunset... for reasons I can't explain, my HE switched to Night mode at the time of Sunet-30. I then manually switched Mode to Evening and when Sunset came, no Mode change.
DST is just not worth all of these issues 
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The issue does not appear to be related to DST. Logs indicate it was occurring before, I just had not noticed. The problem that the sunset triggers are consistently firing rules an hour later than the system says sunset has happened. Your problem sounds like it is getting confused about which mode to set. Something is happening at Sunset-30, just the wrong thing.
