How to get luxon to output ISO date format without a colon in the timezone

Question

How to generate dates using luxon in the following format

2020-12-03T16:35:40.426+0100

I've tried to use

let format = "yyyy-MM-dd\'T\'HH:mm:ss.SSSZ"
let str = date.toFormat(format)

but I get

2020-12-03T15:32:00.000+1

Trysail

Try the toIso() method of the DateTime object as mentioned in moment.github.io/luxon/docs/class/src/… – Gussiegussman

It outputs the timezoe as "01:00" instead of "0100" – Trysail

I've found the correct format string ""yyyy-MM-dd\'T\'HH:mm:ss.SSSZZZ" – Trysail

Answer 1

From Luxon's table of tokens

Z       narrow offset   +5
ZZ      short offset    +05:00
ZZZ     techie offset   +0500

Thus, you can use ZZZ to emit the offset in the format you requested.

However, be aware that combining this in the way that you asked would produce a string that is not compliant with ISO 8601.

ISO 8601 (in section 4.3.2) provides two valid formats, "Basic" and "Extended":

Basic format                Example
YYYYMMDDThhmmss             19850412T101530
YYYYMMDDThhmmssZ            19850412T101530Z
YYYYMMDDThhmmss±hhmm        19850412T101530+0400
YYYYMMDDThhmmss±hh          19850412T101530+04

Extended format             Example
YYYY-MM-DDThh:mm:ss         1985-04-12T10:15:30
YYYY-MM-DDThh:mm:ssZ        1985-04-12T10:15:30Z
YYYY-MM-DDThh:mm:ss±hh:mm   1985-04-12T10:15:30+04:00
YYYY-MM-DDThh:mm:ss±hh      1985-04-12T10:15:30+04

Most people use the extended format, and sometimes you will find the basic format (especially in URLs). But you have combined the date and time from the extended format with the offset from the basic format, which is not a supported combination.

Unless you are locked into this for some reason, I suggest moving to either the basic or extended format.

Perron

This was just to make the JIRA rest api happy. For some reason JIRA can't parse normal 8601 but requires the format i was looking for. – Trysail

Ah yes. It seems JIRA has decided not to fix this. jira.atlassian.com/browse/JRASERVER-59430 – Perron

Or they should at least in their JS API provide some translation functions. It wasted a couple of hours of my time. Thanks for bugging them on the issue tracker. – Trysail