Indicates whether this date occurs during the previous month, as determined by the current date and time on the system.
function (optional
dateTime
as nullable any) as nullable any
Indicates whether the given datetime value dateTime
occurs during the previous month, as determined by the current date and time on the system.
Date
Determine if the month before the current system time is in the previous month.
Date.IsInPreviousMonth(Date.AddMonths(DateTime.FixedLocalNow(), -1))
true