When JST (Japan Standard Time) 04:00 is crossed, any unsubmitted Check Files will have Exceeded due date, and today's work will switch over to the next day.
For Check Files where all Check Items are set to "Every Time", a "+" will appear in that day's row in the Work Record list after 00:00, allowing you to start that day's work without waiting until 04:00.
The previous day's work can be continued as-is until 04:00.
The Exceeded due date and the switchover of today's work occur at 04:00, the same as with other Check Files.