Work Week in World Clock
World Clock can display current work week number on clock faces. It's a numerical week counter since the beginning of the year.

Taskbar clock with work week

Desktop clock with work week
Both digital and mechanical (analog) skins are capable to display work week number.
Weekday Number
In addition to calendar week number, you can display weekday number (either as 0-6 or 1-7). For example, the screenshot below shows
40.1 for work week 40 and weekday 1 (for Monday).

Week and weekday number on taskbar clockface
How to Display Work Week and Weekday Counters
To display a work week or weekday number, use an appropriate
date formatter. Specifically, use any one of the following character combinations:
- ww – calendar week counter with leading zero (value depends on 1st week of year setting)
- w – calendar week counter without leading zero (value depends on 1st week of year setting)
- wd - weekday counter 0-6 (value depends on 1st day of week setting)
- wD - weekday counter 1-7 (value depends on 1st day of week setting)
The output on the screenshot above is accomplished with the following formatter:
"\nWork Week w.wd". In this formatter:
- \n - designates a new line
- Work Week - printed as is (no substitution)
- w - printed as "40" for calendar week 40.
- . - printed as is (as a dot)
- wd - printed as "1" for Monday (week starts on Sunday)
Configuring 1st Week of Year
There are 2 options to configure what is the 1st week of the year. It may be either the week containing January 1 or the week with at least the first 4 days of year in it. Configure this on the
Calendar page in
Preferences.

Configuring first week of year in World Clock Preferences
Configuring 1st Day of Week
Set any weekday to be the 1st day of week on the Calendar page in Preferences.

Configuring first day of week in World Clock Preferences
World Clock User Guide