now.go
func (now *Now) EndOfWeek() time.Time {
	return now.BeginningOfWeek().AddDate(0, 0, 7).Add(-time.Nanosecond)
}
func (now *Now) EndOfWeek() time.Time {
	return now.BeginningOfWeek().AddDate(0, 0, 7).Add(-time.Nanosecond)
}
// EndOfWeek end of week