Business Days between two dates

Question

I can easily add business days to a given date,

future = DatePlus[Today, {9, "BusinessDay"}]

Is there some way to measure the business days between two dates? In other words, a version of

DateDifference[Today, future]

that returns 9 BusinessDays instead of 13 days?

Answer 1

Use DayCount:

?DayCount

DayCount[Subscript[date, 1],Subscript[date, 2]] gives the number of days from Subscript[date, 1] to Subscript[date, 2]. DayCount[Subscript[date, 1],Subscript[date, 2],daytype] gives the number of days of the specified daytype from Subscript[date, 1] to Subscript[date, 2]. >>

For your example:

future = DatePlus[Today, {9, "BusinessDay"}];

DayCount[Today, future, "BusinessDay"]

9