Can you actually get the time and date from just a shadow? (installment #3)
This is part 3 of the time & date from a shadow Challenge. This is all about using tools, and checking to make sure the tools work the way you think!
We're back trying to figure out when this satellite photo was taken.
1. What day and time-of-day was this photograph taken?
In our last post, I tried using a lot of photographic resources, but didn't get very far. Turns out that while the Skytree has a LOT of photos, very few are the ones I need!
|Using Suncalc, I can find a time/date that shows the shadow just over the Sumida bridge! |
I just read the time/date off the panel on the left side. 10:42AM, Jan 29, 2020
|By using ShadowMap in the same way, I could find an identical map model... but for a slightly different time. Here, the time is shown as 11:12AM on Jan 29, 2020. Why is it 30 minutes different than SunCalc?|
This is pretty great! The model aligns pretty closely with the real image!
Jan 29 11:12 AM