Sundial

Sundial is a simple lightweight app that finds your current location using GPS and calculates Local Mean Solar Time, and Sundial Time from the extremely accurate GPS clocks, and updates in Realtime!

Use Sundial on road trips, or flights (some phones have airplane mode with GPS still enabled). With continuous updates on, if you're far enough north or south of the equator, and traveling fast enough west, you can maybe watch the clocks stop or even run in reverse!

GPS clocks are more accurate than android network updated clocks. Use Sundial to get the most accurate time especially when out in the wilderness with no network connection for an extended period of time. GPS clocks won’t drift over time and should be available anywhere in the world where the sky is visible! Sundial time is more useful than time zones in the wilderness anyways, so give Sundial a try today.

Sundial won’t drain your battery because it only gets GPS signals when you request them. GPS is even shut off if you forget and leave Sundial in continuous updating mode.