Go Time and Duration | Programming Tutorials

$ go run time.go 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 # Next we'll look at the related idea of time relative to # the Unix epoch. 

// Go offers extensive support for times and durations; // here are some examples. 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)) }