MoveSpring challenges are created using the account owner's time zone to determine the start and end times. 

All challenges begin at midnight of the start date and end at 11:59 PM of the end date. Due to using the account owner's time zone to determine start and end times, this may not correspond to midnight, or 11:59 PM in your time zone

Please reach out to your challenge admin if you are interested in finding out more about your challenge's default time zone.

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