How to check whether current local time is DST?

Question

In Ruby, for example, there\'s the Time#dst? function, which returns true in the case it is daylight saving time. Is there a Go standard library API call to do

Answer 1

In a pinch, this should do the trick:

func inDST(t time.Time) bool {

    jan1st := time.Date(t.Year(), 1, 1, 0, 0, 0, 0, t.Location()) // January 1st is always outside DST window

    _, off1 := t.Zone()
    _, off2 := jan1st.Zone()

    return off1 != off2
}