My mother-in-law is having a issue with her 635 calendar. She has been creating events in her calendar and today she noticed that all of the events she's created have moved to 1 day earlier. Example: all day events originally set on the 19th are now on the calendar for the 18th. She doesn't use a laptop or create events on any other devices other than her phone. Any idea what's goinig on here and is there an easy fix? Events for the rest of the year are all off by one day. Holidays are on the correct day. The phone is still running 8.1 and no updates are available.