Sun Facts

更聰明的方式來看待太陽

A smarter way to watch the sun.

Quickly calculate sun activity.

* Calculates the following data:

- Sunrise

- Solar noon

- Sunset

- Length of day

- Twilight times

- Equation of time

- Declination

- Azimuth of sunrise and sunset

- Altitude of sun at noon

- Sun Path during the day

- Solstice and Equinox dates

pro version:

- Moon rise

- Moon transit

- Moon set

- Declination

- Azimuth of moon rise and moon set

- Altitude of moon during transit

- Date of next new/full moon

* Specify a location by :

- GPS receiver

- list of more than 30000 cities

- geo coordinates supported are: latitude/longitude, UTM and MGRS

* Any date between 01/01/1901 and 01/31/2099 can be selected

* Information can be shared on Twitter and Facebook or send via email