dExpression| tExpression

Specifies the Date or DateTime expression for which WEEK(В ) returns the week of the year. When you omit nFirstWeek and nFirstDayOfWeek, WEEK(В ) uses Sunday as the first day of the week.

[, nFirstWeek]

Specifies the requirements for the first week of the year. The following table lists the values for nFirstWeek.

nFirstWeek	Description
0	Specifies that WEEK(В ) return the week that is currently selected in the First Week of Year box on the Regional tab of the Options dialog box.
1	First week contains January 1st. This is the default when you omit nFirstWeek.
2	The larger half (four days) of the first week is in the current year.
3	First week has seven days.

[, nFirstDayOfWeek]

Specifies the first day of the week. The following table lists the values for nFirstDayOfWeek.

nFirstDayOfWeek	Description
0	Specifies that WEEK(В ) return the day that is currently selected in the Week Starts on box on the Regional tab of the Options dialog box.
1	Sunday. This is the default when you omit nFirstDayOfWeek and is the first day of the week used in earlier FoxPro versions.
2	Monday
3	Tuesday
4	Wednesday
5	Thursday
6	Friday
7	Saturday

Numeric type. WEEK(В ) returns a number representing the week of the year.

WEEK( ) returns a number from 1 to 53 that represents the week of the year. For example, WEEK( ) returns 1 for the first week of the year, 2 for the second week of the year, and so on. Note that a week can be split between years — the first week of the year can be in the current year and the previous year.