Occasionally, there are issues where a teacher marks a student absent later in the day, if they did not record attendance during a course. Being able to see, either via a filter, report, or advance list field, the exact time attendance was recorded would be very helpful to be able to tell when some attendance was recorded later in the day.
The date and time that class attendance was recorded now shows on the Attendance > Class Attendance screen. Once attendance is flagged as 'Taken' for a class, the date and time will show next to it.