I had updated all the due date times for 11:59pm within the definition files of my Webwork course before archiving, downloading and then uploading them again for the new semester. However about 50% of the due times have shifted by plus or minus one hour. Many of the 11:59pm due dates have been shifted forward to 10:59pm still others have shifted to 12:59am the following day.
The dates are all consistent, it is just the jostle of the one hour that is puzzling.
What would cause this as the definition files all state 11:59pm as the time at which all these assignments should be due. ??