Mystery Class Update, March 17, 1995 Just 3 more days until the first day of spring! As promised, we're about to begin the first in a series of clues that will help you solve this mystery. In preparation for the first clue, here's what you need to do: 1) On Monday, March 20th record you sunrise and sunset data as usual. 2) Next, find out what time it was GREENWHICH MEAN TIME (GMT) when the sun rose where you are. 3) In next Friday's message, along with the regular sunrise and sunset data, we'll give you the sunrise GREENWHICH MEAN TIME from each Mystery Location. 4) Instructions will be provided to help you determine the longitude of each Mystery Class using the GREENWHICH MEAN TIME sunrise figures. Here are some things to think about in the MEANtime: 1) What is Greenwhich Mean Time? 2) Why do you think you will be able to estimate the longitude of each location by knowing the time of sunrise GMT? Thanks to Mrs. Berger's class, here are this week's figures from around the world: JOURNEY NORTH MYSTERY CLASSES SUNRISE/SUNSET DATA DATE: Monday, March 13th MYSTERY CLASS SUNRISE SUNSET # 1 6:42 am 19:09 pm # 2 7:22 am 6:42 pm # 3 6:55 am 21.24 am # 4 6:20 am 6:12 pm # 5 No Data # 6 6:52 am 18:20 pm # 7 6:41 am 6:19 pm # 8 6:51 am 18:19 pm # 9 5:45 am 17:46 pm #10 7:15 am 7:42 pm #11 7:09 am 7:43 pm Data Collected by: Joan Berger Internet Educational Consultant East Hills School Roslyn, New York 11577 K12ROBZJ@vaxd.hofstra.edu