January 26 - May 4, 2018

Photoperiod Clues
Track day length to estimate latitude.

 January 26 - April 6
Time Clues
Investigate Universal Time to estimate longitude.
       March 9

Continent, Country, City Clues
Research facts to pinpoint locations.

March 16 - April 6
Submit Answers
Submission checklist provided in News Update.
April 6 - April 20
Deadline to Submit Answers
Submit by midnight.
 April 20
Mystery Sites Revealed
Mystery Class locations and challenge results
  April 27
Meet and Greet
Pictures, videos, fun facts, and greetings
      May 4