The week numbering depends on the choice of the first day of the week. If it is Sunday then the customary North American numbering is used, where 1 January is in week number 1. If it is Monday (*-m*) then the ISO 8601 standard week numbering is used, where the first Thursday is in week number 1.
include::man-common/colors.adoc[]
+The logical color names supported by *cal* are:
+
+*today*::
+The current day.
+
+*weeknumber*::
+The number of the week.
+
+*header*::
+The header of a month.
+
+*workday*::
+Days that fall within the work-week.
+
+*weekend*::
+Days that fall outside the work-week.
== HISTORY
Alternative calendars, such as the Umm al-Qura, the Solar Hijri, the Ge'ez, or the lunisolar Hindu, are not supported.
+== SEE ALSO
+
+*terminal-colors.d*(5)
+
include::man-common/bugreports.adoc[]
include::man-common/footer.adoc[]