Sun clock
The daylight you have, drawn as an arc.
Sunrise, sunset, day length and where the sun is on its arc right now, worked out from your latitude and longitude. No network call, so it keeps working when everything else cannot.
Make it yours
This widget is already on the board above. Use Add widget to put more beside it, drag the cards to swap them, and the whole set saves to this browser — no account, no database, nothing to log in to. Add a second card and this page quietly becomes your dashboard, board and all.
Every widget here is free and needs no API key. Where a widget cannot work where you are, it says so rather than showing a guess.