Eclipse, Aug. 21, 2017: how long was totality where I was?

I was in Prairie Home, MO for the eclipse. Totality seemed to last less than a minute there. How can I find out how long it actually lasted?


This site says 2 minutes and 36 seconds.

Yeah, and that’s really hard to believe. It seemed to be over so fast. This reinforces the fact that our perception of time is so relative.


Hmm. This online calculator claims an extra 3 seconds, or nearly 2m38s, if one takes into account the lunar limb profile.