HEATKEYS

The Astronomical Applications Departmentof the U.S. Naval Observatory computes, from fundamental astronomicalreference data, the position, brightness, and other observablecharacteristics of celestial bodies, as well as the circumstancesof astronomica...

This site includes lots of information that is time and date related, such as yearly and monthly calendars, countdown counters and the world clock which shows current time in cities all over the world.

geographic specific daily and current position information of the moon including magnetic declination, altitude, azimuth, and relative brightness

Interactive moon sign calendar with moon phase and moon sign calculation, timing with the moon, background information

Learn how to take and edit digital photos using interactive visual tutorials, and share photography advice in our forums community.

The web

The NOAA Earth System Research Laboratory was formed to observe and understand the Earth system and to develop products, through a commitment to research that will advance the National Oceanic and Atmopsheric Administration

A comprehensive calculation website, which aims to provide higher calculation accuracy, ease of use, and fun, contains a wide variety of content such as lunar or nine stars calendar calculation, oblique or area calculation for do-it-yourself, and hig...

Stargazing Network provide free Web page hosting for the Amateur Astronomy Community. Stargazing Network is sponsored by Cetus Technology at www.cetus.net.