Calendars
Clocks

Time, by moments, steals away,
First the hour, and then the day;
Small the daily loss appears,
Yet it soon amounts to years
John Newton

ASTRONOMY

E-Books onlinebooks.library.upenn.edu
Astronomy multilingual / Robyn M. & Robert R. Shobbrook
Solar Phenomena solar-center.stanford.edu
Solar Physics hesperia.gsfc.nasa.gov

Quizzes
Quizzes Mike Guidry

Time
History of Timekeeping NIST
Lesson Plan Tom Spencer
Lesson Plans Measuring Time / ProTeacher
StarBits abbreviations, acronyms, contractions, symbols

CALENDARS ^

Advent
Aztec azteccalendar.com
Chinese
Chinese, Japanese, Vietnamese cjvlang.com
Customized put in a date - creates calendar
Mayan
Perpetual Mark J. Smith
Religious Christian-Jewish-Moslem
Sun & Moon:  FAQ U.S. Naval Observatory
Sun & Moon:  Data U.S. Naval Observatory

History Calendars Through the Ages
History L.E. Doggett
History Virtual Middle School Library
FAQ Claus Tondering
Lesson Plan Education World
Lesson Plan David P. Stern
Lesson Plans preschoolprintables.com

CLOCKS ^

Official Time U.S. Naval Observatory
Official Time NIST
World Time Zones Swiss Info
World Time Zones U.S. Naval Observatory
World Time Zones Steffen Thorsen
World Time Zones
Space Shuttle Countdown Clock