Your sensor assigns individual timestamps to each swing as they are recorded. However, if your sensor has died and been recharged multiple times without connecting to the app, the timestamps for swings recorded during this time may be incorrect.
With a motusDASH subscription (See: Subscribing to motusDASH), you can change the date and time of individual swings. Login to your account and navigate to the Interday tab of the Long Term Trends page.
Select a range of swings and click Change Date. Select a new date and click the green checkmark to save your selection. If you need to update the time of the swing, you can do so by selecting one throw at a time and clicking Change Time.