Get UTC Time from Unix TimeSpan

Unanswered

Banjara Hound posted this in #help-forum

Banjara HoundOP

2024-01-12T18:20:13.000Z

i have an api that created with C#. that api use jwt for auth.. inside jwt has a property called exp that contain Unix TImeSpan of expire date in UTC Format. so now how to get current date-time as utc format and compare it to expire date?

TL;DR : i want current time as Unix TimeSpan UTC and Compare it with my own Unix TimeSpan UTC.

11 Replies

Toyger

2024-01-12T18:48:31.000Z

let utc_timestamp = new Date().getTime();
if (utc_timestamp>=(jwt_exp_time*1000)){
console.log("token expired")
}

Banjara HoundOP

2024-01-12T18:53:15.000Z

thanks but as i know that code return time from system time zone not UTC.

Toyger

2024-01-12T19:02:01.000Z

iirc it adjust it after conversion, so inside unixtime it's seconds from UTC.

Banjara HoundOP

2024-01-12T19:06:28.000Z

thanks. i will check it if it's work.

no it's not. it's timespan of that timezone.

i think this is what i want,

    const utc = new Intl.DateTimeFormat('en-GB', {
        year: "numeric",
        month: "numeric",
        day: "numeric",
        hour: "numeric",
        minute: "numeric",
        second: "numeric",
        hour12: false,
        timeZone: 'UTC',
    }).format(new Date());

then

const utcNow = new Date(utc).getTime();
//then compar utcNow with my own timezone. i just have to check it to see it's work or not.

if any one has better solution feel free to help me.

Toyger

2024-01-12T19:16:20.000Z

maybe this

Date.parse(new Date().toISOString())

Banjara HoundOP

2024-01-13T04:23:36.000Z

thanks. yes that is what i want.

Banjara HoundOP

2024-01-13T04:33:38.000Z

and work as expected.

js should create a method that get utc time from timezone server not client or server of poject