Countdown to Mystery Class: Two Months to Go!

During Mystery Class, students will receive sunrise and sunset times from mystery locations around the world. This month, set time zone clocks to explore local and Universal Time.

Mystery Class begins January 28, 2013. Watch for monthly "Countdown to Mystery Class" messages to help you and your students get ready.


Image of the Month

Los Angeles Greenwich Baghdad
What time is it?
How Can I Prepare Students? Track Changes in Day Length


The solstice is coming!
Remember to report photoperiod twice in December.

  • Look up your data for Dec 1 and Dec. 21.
  • Report data (select "daylight").
  • View data on photoperiod map.


Report to the Map!

Activity: World Clocks

Clocks are a constant reminder that the rotating Earth causes sunrise and sunset to occur at different times around the world. In this activity, students use time zone clocks to imagine what people are doing in time zones near and far.

World Clocks
Just for Teachers: Helpful Links
The Next Countdown to Mystery Class will be posted January 1, 2013.