Calendar Conversions

including Julian day number, Gregorian calendar, Jewish calendar and French republican calendar conversions

GreenwichMeanTime.com

Home of Greenwich Mean Time.

Hong Kong Observatory

Local Apparent Sidereal Time

Which is the actual time for your spot on the globe in relation to Greenwich. Outside the USA you will have to know your longitude (that's the East, West one!).

Local Times Around the World

Need to know what time it is in far away places?

NIST "Official US Time"

Standard Time Zones

Standard Time Zonesof the World.

Sun or Moon Rise/Set Table for One Year

From US Naval Observatory.

Sunrise, Sunset and Twilight Times

Compute sunrise, sunset & twilight times for anywhere in the world

Time Synchronization Server at U.C.L.A.

U. S. Naval Observatory

Moon phases, time standards, much technical info.

World Time Map

Real-time map of the current time around the world.

World Time Zone Map