Investigate daylength from different places in the Northern Hemisphere on the Equinox. Use the practice chart below to help you calculate photoperiod. Look up your hometown sunrise/sunset data for the Equinox. Explore other Journey North classroom locations and compare.
- Find your sunrise/sunset for Sept. 23:
http://www.usno.navy.mil/USNO/astronomical-applications/data-services/rs-one-day-us
| Date | Place | Sunrise Time | Sunset Time | Photoperiod |
| Equinox (September 23) |
Our hometown | |||
| Austin, TX | 7:20 AM | 7:26 PM | ||
| North Pole, AK | 7:35 AM | 7:47 PM | ||
| Other places from map on September 23 | ||||
* Explore other places on the map reporting in on different dates. What do you notice about their locations and their daylight on these dates? Do you see any patterns?
| Questions, Thoughts, or Discoveries |