Sunset & Sunrise not updating

Woke up this morning with some of my automations not firing correctly.
Checked the hub logs and saw that getSunriseAndSunset() returned yesterdays dates

System Events show that they were updated yesterday:

I am on 2.1.4.121

Went to Location/Modes and hit "update" and that fixed the dates.

Any idea what could have caused that to prevent it in the future?