now.go
func (now *Now) EndOfQuarter() time.Time {
	return now.BeginningOfQuarter().AddDate(0, 3, 0).Add(-time.Nanosecond)
}
func (now *Now) EndOfQuarter() time.Time {
	return now.BeginningOfQuarter().AddDate(0, 3, 0).Add(-time.Nanosecond)
}
// EndOfQuarter end of quarter