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Grmmff t1_ix5lmj1 wrote

The current results source says it's single calendar day, so my guess is midnight to midnight.

I'm not sure where someone would find a database of snowfall recorded by the hour. So finding the 24 hour record would take reading historical news articles and a lot more research than looking at a chart. The article doesn't list it's source but I'm guessing the national weather service.

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