Go Date Parser
Parse many date strings without knowing format in advance. Uses a scanner to read bytes and use a state machine to find format. Much faster than shotgun based parse methods. See bench_test.go for performance comparison.
MM/DD/YYYY VS DD/MM/YYYY Right now this uses mm/dd/yyyy WHEN ambiguous if this is not desired behavior, use ParseStrict
which will fail on ambiguous date strings.
Timezones The location your server is configured affects the results! See example or https://play.golang.org/p/IDHRalIyXh and last paragraph here https://golang.org/pkg/time/#Parse.
t, err := dateparse.ParseAny("3/1/2014")
t, err := dateparse.ParseStrict("3/1/2014")
> returns error
layout, err := dateparse.ParseFormat("May 8, 2009 5:57:51 PM")
> "Jan 2, 2006 3:04:05 PM"
cli tool for testing dateformats
Date Parse CLI
Extended example
https://github.com/araddon/dateparse/blob/master/example/main.go
package main
import (
"flag"
"fmt"
"time"
"github.com/scylladb/termtables"
"github.com/araddon/dateparse"
)
var examples = []string{
"May 8, 2009 5:57:51 PM",
"oct 7, 1970",
"oct 7, '70",
"oct. 7, 1970",
"oct. 7, 70",
"Mon Jan 2 15:04:05 2006",
"Mon Jan 2 15:04:05 MST 2006",
"Mon Jan 02 15:04:05 -0700 2006",
"Monday, 02-Jan-06 15:04:05 MST",
"Mon, 02 Jan 2006 15:04:05 MST",
"Tue, 11 Jul 2017 16:28:13 +0200 (CEST)",
"Mon, 02 Jan 2006 15:04:05 -0700",
"Mon 30 Sep 2018 09:09:09 PM UTC",
"Mon Aug 10 15:44:11 UTC+0100 2015",
"Thu, 4 Jan 2018 17:53:36 +0000",
"Fri Jul 03 2015 18:04:07 GMT+0100 (GMT Daylight Time)",
"Sun, 3 Jan 2021 00:12:23 +0800 (GMT+08:00)",
"September 17, 2012 10:09am",
"September 17, 2012 at 10:09am PST-08",
"September 17, 2012, 10:10:09",
"October 7, 1970",
"October 7th, 1970",
"12 Feb 2006, 19:17",
"12 Feb 2006 19:17",
"14 May 2019 19:11:40.164",
"7 oct 70",
"7 oct 1970",
"03 February 2013",
"1 July 2013",
"2013-Feb-03",
"06/Jan/2008:15:04:05 -0700",
"06/Jan/2008 15:04:05 -0700",
"3/31/2014",
"03/31/2014",
"08/21/71",
"8/1/71",
"4/8/2014 22:05",
"04/08/2014 22:05",
"4/8/14 22:05",
"04/2/2014 03:00:51",
"8/8/1965 12:00:00 AM",
"8/8/1965 01:00:01 PM",
"8/8/1965 01:00 PM",
"8/8/1965 1:00 PM",
"8/8/1965 12:00 AM",
"4/02/2014 03:00:51",
"03/19/2012 10:11:59",
"03/19/2012 10:11:59.3186369",
"2014/3/31",
"2014/03/31",
"2014/4/8 22:05",
"2014/04/08 22:05",
"2014/04/2 03:00:51",
"2014/4/02 03:00:51",
"2012/03/19 10:11:59",
"2012/03/19 10:11:59.3186369",
"2014:3:31",
"2014:03:31",
"2014:4:8 22:05",
"2014:04:08 22:05",
"2014:04:2 03:00:51",
"2014:4:02 03:00:51",
"2012:03:19 10:11:59",
"2012:03:19 10:11:59.3186369",
"2014年04月08日",
"2006-01-02T15:04:05+0000",
"2009-08-12T22:15:09-07:00",
"2009-08-12T22:15:09",
"2009-08-12T22:15:09.988",
"2009-08-12T22:15:09Z",
"2017-07-19T03:21:51:897+0100",
"2019-05-29T08:41-04",
"2014-04-26 17:24:37.3186369",
"2012-08-03 18:31:59.257000000",
"2014-04-26 17:24:37.123",
"2013-04-01 22:43",
"2013-04-01 22:43:22",
"2014-12-16 06:20:00 UTC",
"2014-12-16 06:20:00 GMT",
"2014-04-26 05:24:37 PM",
"2014-04-26 13:13:43 +0800",
"2014-04-26 13:13:43 +0800 +08",
"2014-04-26 13:13:44 +09:00",
"2012-08-03 18:31:59.257000000 +0000 UTC",
"2015-09-30 18:48:56.35272715 +0000 UTC",
"2015-02-18 00:12:00 +0000 GMT",
"2015-02-18 00:12:00 +0000 UTC",
"2015-02-08 03:02:00 +0300 MSK m=+0.000000001",
"2015-02-08 03:02:00.001 +0300 MSK m=+0.000000001",
"2017-07-19 03:21:51+00:00",
"2014-04-26",
"2014-04",
"2014",
"2014-05-11 08:20:13,787",
"2020-07-20+08:00",
"3.31.2014",
"03.31.2014",
"08.21.71",
"2014.03",
"2014.03.30",
"20140601",
"20140722105203",
"171113 14:14:20",
"1332151919",
"1384216367189",
"1384216367111222",
"1384216367111222333",
}
var (
timezone = ""
)
func main() {
flag.StringVar(&timezone, "timezone", "UTC", "Timezone aka `America/Los_Angeles` formatted time-zone")
flag.Parse()
if timezone != "" {
loc, err := time.LoadLocation(timezone)
if err != nil {
panic(err.Error())
}
time.Local = loc
}
table := termtables.CreateTable()
table.AddHeaders("Input", "Parsed, and Output as %v")
for _, dateExample := range examples {
t, err := dateparse.ParseLocal(dateExample)
if err != nil {
panic(err.Error())
}
table.AddRow(dateExample, fmt.Sprintf("%v", t))
}
fmt.Println(table.Render())
}