Get the first and last day of current month in Go/Golang?

Question

I\'m trying to get the first and last day of the current month. You can add days and hours but not the month, which I was thinking of subtracting one day from the next month to

Answer 1

The @Apin's answer is dangerous because the now lib makes many wrong assumptions (it bit me in the foot too).
The now lib doesn't consider daylight saving times and many other things: https://github.com/jinzhu/now/issues/13

This is how I'm doing it:

t := time.Now()
firstday := time.Date(t.Year(), t.Month(), 1, 0, 0, 0, 0, time.Local)
lastday := firstday.AddDate(0, 1, 0).Add(time.Nanosecond * -1)

Answer 2

I would do it like this:

// LastDayOfMonth returns 28-31 - the last day in the month of the time object
// passed in to the function
func LastDayOfMonth(t time.Time) int {
    firstDay := time.Date(t.Year(), t.Month(), 1, 0, 0, 0, 0, time.UTC)
    lastDay := firstDay.AddDate(0, 1, 0).Add(-time.Nanosecond)
    return lastDay.Day()
}

a