Calendar Server
cis, single-valued
First day of the week to be displayed on user’s calendar.
Range of values: 1–7, with the values assigned as follows:
1 = Sunday
2 = Monday
3= Tuesday
4 = Wednesday
5 = Thursday
6 = Friday
7 = Saturday
icsFirstDay: 1
2.16.840.1.113730.3.1.743