Date Parsing issue with chrome alone tha too only in latest version (not in firefox and IE and Edge)

[Prem Kumar]

I am currently in UTC +2 timezone (tripoli). While assigning a date value in ISO string, date values get adjusted with DateLightSaving settings I suspect and the date value itself gets changes. Please check the below link to reproduce the issue.

Link: https://codepen.io/anon/pen/bjbodJ

In the edge browser the value is retunred correctly (Firefox, IE also returns correct value). But value changes only with Google Chrome that too only with current latest version but works fine with older version (65).

Edge working screenshot:

Chrome issue screenshot:

In the above two screenshots, you can find that the date value has been changed in the Chrome browser by 1 day. whereas it displays same value in Edge browser (also fine with mozilla and IE).

Can anyone suggest on this.

[PhistucK]

This is off topic for this group. Please, use crbug.com or chromium-discuss. Do not continue this discussion here.

Note that in 1937, there was no daylight saving time in Tripoli and it was GMT + 1 throughout the entire year so the correct date would be 25, not 26.

Reference -

https://www.timeanddate.com/time/change/libya/tripoli?year=1937

I tried this code and it kept returning the same results when I tried in different Chrome versions -

a = new Date("1937-02-25T22:00:00.000Z")
console.log(new Intl.DateTimeFormat("en-us", {timeZone: 'Africa/Tripoli', era: "long", hour: "numeric", day: "numeric", month: "numeric", year: "numeric", minute: "numeric", second: "numeric", timeZoneName: "long"}).format(a));
console.log(new Intl.DateTimeFormat("en-us", {timeZone: 'Asia/Jerusalem', era: "long", hour: "numeric", day: "numeric", month: "numeric", year: "numeric", minute: "numeric", second: "numeric", timeZoneName: "long"}).format(a));

Edge 17 (and the Insider preview) does show 26, which seems to be wrong. Firefox 61 and Safari 11.1 show the same as Chrome.

Hint - new Intl.DateTimeFormat().resolvedOptions() will tell you what time zone the browser thinks you use. You can compare the results in 65 (if you still have it somewhere) versus 67 or the version you use.

☆PhistucK

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