acLogicalDs3DayNumber 1.3.6.1.4.1.2785.2.4.3.3.1.3

A number between 1 and 31, where 1 is the current 24 hour day interval in progress, 2 is the most recently completed 24 hour day interval and 31 is the 24 hour day interval completed 29 days prior to interval 2.