Learn X By Example
Learn X By Example

    Go by Example: Epoch

    Go by Example : Epoch

    A common requirement in programs is getting the number of seconds, milliseconds, or nanoseconds since the Unix epoch . Here’s how to do it in Go.

    package main
    import (
    "fmt"
    "time"
)
    func main() {

    Use time.Now with Unix , UnixMilli or UnixNano to get elapsed time since the Unix epoch in seconds, milliseconds or nanoseconds, respectively.

        now := time.Now()
    fmt.Println(now)
        fmt.Println(now.Unix())
    fmt.Println(now.UnixMilli())
    fmt.Println(now.UnixNano())

    You can also convert integer seconds or nanoseconds since the epoch into the corresponding time .

        fmt.Println(time.Unix(now.Unix(), 0))
    fmt.Println(time.Unix(0, now.UnixNano()))
}
    $ go run epoch.go 
2012-10-31 16:13:58.292387 +0000 UTC
1351700038
1351700038292
1351700038292387000
2012-10-31 16:13:58 +0000 UTC
2012-10-31 16:13:58.292387 +0000 UTC

    Next we’ll look at another time-related task: time parsing and formatting.

    Next example: Time Formatting / Parsing .

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