Smartthings sunset triggering not at the right time

I have multiple Automations, that depend on sunrise/sunset.
Lately I have discovered that my sunset routines run several hours too early.

I created an Automation that sends me a message at sunset and it turns out, my system thinks this happens twice a day. The last one is correct, but the first one is six hours early :frowning:.

When I check in IDE, everything seems fine (time zone, location, sunrise/sunset times etc.).

Any ideas?

Hmm, after a few days, my automations started working as expected again.