Tracking Changes in Photoperiod Around the Globe
Today's News
A/CPB
Mystery Class Update: February 21, 1997
Thanks to
Mrs. Berger's class , here is the second set of
sunrise/sunset data from our Mystery sites around the world. As
you plot this week's information on your graph, see if you can
determine these things:
- Where is photoperiod changing the most quickly?
- In which places is it increasing? In which places is it
decreasing?
- What might these things tell you about the location of each site?
Thanks to Mrs. Berger and The Time Service Dept., U.S Naval Observatory, you now have another excellent research tool to look up your own hometown sunrise/sunset times. Mrs. Berger tells us that you can use this Internet resource to find your own sunrise and sunset times by entering your latitude and longitude coordinates.
Our thanks to her for making this suggestion!
Remember, this information was recorded on Monday, the same day you collected your sunrise/sunset data.
Journey North Mystery Class
Sunrise/Sunset Data
Data For: Monday, February 17, 1997
| Mystery Class | Sunrise | Sunset |
|---|---|---|
| # 1 | 09:08 | 17:27 |
| # 2 | 10:00 | 17:24 |
| # 3 | 06:52 | 20:35 |
| # 4 | 05:41 | 17:55 |
| # 5 | 07:43 | 19:05 |
| # 6 | 00:00* | 00:00* |
| # 7 | 07:09 | 17:41 |
| # 8 | 05:52 | 18:51 |
| # 9 | 06:55 | 17:20 |
| # 10 | 06:53 | 19:41 |
** "Our sunset sunrise times are still 0. Two more days and we will see the sun disappear for the first time in 4 months. Having 24 hours of daylight does get a little old after a while. Cheers."
The Next Mystery Class Update Will Be Posted On February 28, 1997