The IsWeekend( d ) command determines whether the Date object d specifies a date that falls on a weekend. The command may also be used in the form IsWeekend( year, month, day ), with the year, month and day fields individually specified.

In the POSIX locale, a date falls on a weekend if the day of the week is either Saturday (6) or Sunday (1).

$\mathrm{with}\left(\mathrm{Calendar}\right)\:$

$\mathrm{IsWeekend}\left(2017\,11\,3\right)$

$\mathrm{false}$

$\mathrm{IsWeekend}\left(2017\,11\,4\right)$

$\mathrm{true}$

The Calendar[IsWeekend] command was introduced in Maple 2018.

For more information on Maple 2018 changes, see Updates in Maple 2018.