Human Analemmatic Sundial - Tulsa, Oklahoma, USA
Posted by: 
Max and 99
N 36° 12.432 W 095° 53.754
15S E 239650 N 4010818
An interactive sundial is located on the grounds of the Tulsa Air and Space Museum and Planetarium. The museum was closed when we visited, but the sundial is on the grounds and outside the museum entrance.
Waymark Code: WM15XAP
Location: Oklahoma, United States
Date Posted: 03/15/2022
Views: 3
Just outside the TASM Planetarium, next to the parking lot and walkway, is an interactive sundial. A large blue sign has instructions for determining the current hour of day. We noticed that the time was an hour off, and then remembered that just about 7 hours ago Daylight Saving Time started so we added an hour and it was correct!
At the center of the sundial is a double row of stepping stones that have the names of the months. The stepping stone for June is the smallest, by design. Arranged in a semi-circle from the viewer's left are the numbers (hours) of 4-12, and on the right (1-9).
Instructions posted at Sundial:
Human Analemmatic Sundial
1. Stand on the current month.
2. Raise hand directly above head.
3. Shadow should be on hour of day.
4. Daylight Saving Time add one hour.
Scientific Principle(s) being demonstrated:
The human analemmatic sundial requires your interaction in order to see the principle of your shadow hitting the correct hour of the sundial. By standing on the correct month, the shadow of your upstretched arm hits one of the "hour" stepping stones, letting you know about what time of day it is.
Briefly explain if the experiment was effective for you. Could it have been better?:
This was so cool! We jumped right into the first instructions, standing on the correct month and holding our arm straight up. Oh no, the time is an hour off! That's when we noticed the last instruction, and it had just turned Daylight Saving Time a few hours ago!
When is the apparatus/experiment available to the public:
According to the stepping stones, the hours included for the sundial time are: 4-12 and 1-9.
The sundial is in the parking lot of the museum, which was closed on the day we visited. We (and others) had no trouble entering the grounds to see the outdoor displays.
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