Use any datetime object instead of just "sun"

[mikeage]

Checklist

• I checked for similar existing requests (both open and closed) before posting.
• My request is generic, other users may benefit from it too.
• I will participate in further discussion about this feature and can test it (if requested) once it's done.

Proposal

Support for the sun integration is excellent, but I have some other times that are either set explicitly based on conditionals or rather complicated derivations of sun times, and it would be excellent if I could use those for setting times. Is there any chance this might be possible?

Additional info

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[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days

[mikeage]

This would still be useful