format dayjs utc object with current timezone

Describe the bug I want to format UTC date (comes from backend) with current timezone. Can’t find a way to do it. But fromNow formats a relative string, keeping in mind current timezone.

Expected behavior It’s a bit inconsistent that relative formatting of UTC date respects current timezone and absolute doesn’t.

The only problem here is to format utc time with current timezone. I can’t find any flag such as respectTimezone, so absolute date is formatted relative to current timezone.

Information

• Day.js Version 1.9.7
• OS: Xubuntu
• Browser Chromium Version 87.0.4280.88 (Official Build) snap (64-bit), Firefox 84.0
• Time zone: GMT+0300 (Moscow Standard Time)

code:

dayjs.extend(dayjs_plugin_relativeTime)
dayjs.extend(dayjs_plugin_localizedFormat)
dayjs.extend(dayjs_plugin_utc)
dayjs.extend(dayjs_plugin_timezone)

console.log(String(new Date()))

const now = dayjs()
console.log('now:', now.format())

const date = dayjs.utc("2020-12-20T23:30:00.000")
console.log('UTC date:', date.format())
console.log('UTC date format LLL:', date.format('LLL'))
console.log('UTC date from now:', date.fromNow())

output:

"Mon Dec 21 2020 02:45:43 GMT+0300 (Moscow Standard Time)"
"now:" "2020-12-21T02:45:43+03:00"
"UTC date:" "2020-12-20T23:30:00Z"
"UTC date format LLL:" "December 20, 2020 11:30 PM"
"UTC date from now:" "16 minutes ago"

Pen: https://codepen.io/mahenzon/pen/NWRvdYV?editors=0011

Screenshot:

[BePo65]

At the moment I am scanning the open parsing issues and stumble over formatting issues too. So I came to this issue,where I am not completely sure that I understand the problem. My interpretation is that the question is, how to format an utc date value to a defined time zone.

My tests don’t show a problem here.

Besides that I am trying to help improve the reaction to issues (if @iamkun is interested in that kind of help 😃 There are a lot of issues that could be closed, as the are answered.

As far as I understand, dayjs main goal is to be a very small replacement for moment, even if that means that not ever special case is covered. And in my opinion it is very good at that. So perhaps it is worth retrying a switch over from moment 😀

[cigzigwon]

What’s going on with TZ offsets? Confirmed. Same issue here. Makes switching over from moment a pain…