times.go

package main

import (
	"fmt"
	"time"
)

func main() {
	p := fmt.Println
	// We’ll start by getting the current time.
	now := time.Now()
	p(now)
	// You can build a time struct by providing the year, month, day, etc. Times are always associated with a Location, i.e. time zone.
	then := time.Date(
		2009, 11, 17, 20, 34, 58, 651387237, time.UTC)
	p(then)
	// You can extract the various components of the time value as expected.
	p(then.Year())
	p(then.Month())
	p(then.Day())
	p(then.Hour())
	p(then.Minute())
	p(then.Second())
	p(then.Nanosecond())
	p(then.Location())
	// The Monday-Sunday Weekday is also available.
	p(then.Weekday())
	// These methods compare two times, testing if the first occurs before, after, or at the same time as the second, respectively.
	p(then.Before(now))
	p(then.After(now))
	p(then.Equal(now))
	// The Sub methods returns a Duration representing the interval between two times.
	diff := now.Sub(then)
	p(diff)
	// We can compute the length of the duration in various units.
	p(diff.Hours())
	p(diff.Minutes())
	p(diff.Seconds())
	p(diff.Nanoseconds())
	// You can use Add to advance a time by a given duration, or with a - to move backwards by a duration.
	p(then.Add(diff))
	p(then.Add(-diff))
}

// 2012-10-31 15:50:13.793654 +0000 UTC
// 2009-11-17 20:34:58.651387237 +0000 UTC
// 2009
// November
// 17
// 20
// 34
// 58
// 651387237
// UTC
// Tuesday
// true
// false
// false
// 25891h15m15.142266763s
// 25891.25420618521
// 1.5534752523711128e+06
// 9.320851514226677e+07
// 93208515142266763
// 2012-10-31 15:50:13.793654 +0000 UTC
// 2006-12-05 01:19:43.509120474 +0000 UTC