If you happen to use an iPhone, I highly recommend Sol:
http://www.juggleware.com/blog/2012/01/sol-sun-clock-for-iph...
I'm not sure what the equivalent on Android might be; if anyone knows, hopefully they'll weigh in.
http://www.juggleware.com/blog/2012/01/sol-sun-clock-for-iph...
I'm not sure what the equivalent on Android might be; if anyone knows, hopefully they'll weigh in.
The app I linked to is basically a clock that shows you your local solar times (day, night, golden hours, and twilight) at a glance, and can set alarms by them. If you want to wake at civil dawn, or at sunrise, for example, it'll do that.