You may want to check these posts about Datetime operations: 1. https://stackoverflow.com/questions/4946316/showing-difference-between-two-datetime-values-in-hours 2. https://www.c-sharpcorner.com/article/calculating-date-difference-in-C-Sharp/ 3. http://csharp.net-informations.com/statements/csharp-date-difference.htm
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