Checks the users time and then flips between two different themes. A "moon theme" for after 8pm and before 8am and a "sun theme" the rest of the time.

To flip themes you can change the system time.

What it shows

How to use the dynamic theme API and the alarm API.

Images are under creative commons 2.0: https://creativecommons.org/licenses/by/2.0/ and are:

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