HKCU\Control Panel\International
| Data type | Range | Default value |
|---|---|---|
| REG_SZ | 0 | 1 | 2 | For U.S. English: 0 |
Specifies which week of the year is considered first.
| Value | Meaning |
|---|---|
| 0 | Week containing January 1 is the first week of the year. |
| 1 | First full week following January 1 is the first week of the year. |
| 2 | First week containing at least 4 days is the first week of the year. |