On the following Mondays the Mystery sites record their sunrise/sunset data. We collect the data and link to it here on Fridays, four days later.

• Data from Feb 1 (reported Feb 5)
• Data from Feb 8 (reported Feb 12)
• Data from Feb 15 (reported Feb 19)
• Data from Feb 22 (reported Feb 26)
• Data from Mar 1 (reported Mar 5)
• Data from Mar 8 (reported Mar 12)
• Data from Mar 15 (reported Mar 19)
• Data from Mar 22 (reported Mar 26)
• Data from Mar 29 (reported Apr 2)
• Data from Apr 5 (reported Apr 9)
• Data from Apr 12 (reported Apr 16)

• Read March 19, 2010 Update to find Longitude Clues and related resources.

• Sunrise/Sunset Lookup
• Datasheet and Graph
• Calendar
• Latest News

Beginning in March, interdisciplinary clues— about the climate, geography, history and other facts—are posted here on the Fridays.

• March 26
• April 2
• April 9
• April 16

• Clues from Mystery Class #1
• Clues from Mystery Class #2
• Clues from Mystery Class #3
• Clues from Mystery Class #4
• Clues from Mystery Class #5
• Clues from Mystery Class #6
• Clues from Mystery Class #7
• Clues from Mystery Class #8
• Clues from Mystery Class #9
• Clues from Mystery Class #10