End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Date#cweek

d.cweek → fixnum

static VALUE
d_lite_cweek(VALUE self)
{
    get_d1(self);
    return INT2FIX(m_cweek(dat));
}

Returns the calendar week number (1-53).

Example

Date.new(2001,2,3).cweek          #=> 5

See also #cwday #cwyear #ctime #day also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0