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Version: 8.1

This function is used in Python Scripting.


Compares two dates to see if a target date is between two other dates; checks to see if the target date is between the other two dates.

Client Permission Restrictions

This scripting function has no Client Permission restrictions.

Syntax, start_date, end_date)


Datetarget_dateThe date to compare.
Datestart_dateThe start of a date range.
Dateend_dateThe end of a date range. This date must be after the start date.


Boolean - True if target_date is >= start_date and target_date <= end_date, false otherwise.


Gateway, Vision Client, Perspective Session

Coding Examples

Code Snippet
# This will compare if the first date is between the other dates, which it is not.
# Note that if the end date is before the start date, this function will always return False

target =, 4, 28)
start =, 3, 22)
end =, 4, 22)
print, start, end) #Will print false.


system date isBetween, date.isBetween