Convert timestamp and timezone into RFC3339 format-CodePudding

I am taking timestamp from the user like this

2015-05-28T17:00:00

And a timezone "America/Los_Angeles" Now I want convert the date into something like

2015-05-28T17:00:00-07:00

Is that possible in go ,Please help me out in this ,if you have any links which you can share

CodePudding user response：

You can use ParseInLocation to parse datetime in specific location.

package main

import (
    "fmt"
    "time"
)

func main() {
    loc, err := time.LoadLocation("America/Los_Angeles")
    if err != nil {
        panic(err)
    }

    // Note: without explicit zone, returns time in given location.
    const shortForm = "2015-05-28T17:00:00"
    t, err := time.ParseInLocation("2006-01-02T15:04:05", shortForm, loc)
    if err != nil {
        panic(err)
    }
    fmt.Println(t)
}

Its output is:

2015-05-28 17:00:00 -0700 PDT

CodePudding user response：

"timezone" translates to time.Location in go. To load a location by name:

loc, err := time.LoadLocation("America/Los_Angeles")

Parsing:

to interpret the string as "that timestamp in that location":

t, err := time.ParseInLocation("2006-01-02T15:04:05", input, loc)

to interpret the string as "that timestamp in UTC":

t, err := time.Parse("2006-01-02T15:04:05", input)

Formatting:

to format t according to RFC3339 :

fmt.Println(t.Format(time.RFC3339))

t carries its own time.Location, you can also translate that timestamp to the timezone you see fit:

fmt.Println(t.In(loc).Format(time.RFC3339))
fmt.Println(t.UTC().Format(time.RFC3339))

https://go.dev/play/p/g2BgfdYGxU_I