Sunwait Free command line program to calculate sunrise and sunset times
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calculate sunset sunrise calculate sunrise time sunset time calculator sunrise time calculation

Sunwait Description

Free command line program to calculate sunrise and sunset times Sunwait is a free and open source small C program for calculating sunrise and sunset, as well as civil, nautical, and astronomical twilights. Sunwait has features that make it useful for home automation tasks.While developed under Linux, it should work on any system with a C compiler and the C standard library. With some minor patches provided by George Gugulea, it will compile on Win32 - which results in sunwait.exe, but I haven't tested this extensively.The feature that makes this program slightly unique is that it can be set to wait specific event (such as 5 minutes before sunrise), then exit. This makes it useful for 'cron' jobs or 'scheduled tasks' when you want something to happen relative to sunrise, sunset, or some other astronomical event.

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