Can not set default timezone

[rzvdaniel]

Environment

{ date: "Thu Nov 02 2023 12:37:34 GMT+0100 (Central European Standard Time)", intlZone: "Europe/Madrid", moment: "2.18.1", momentTz: "0.5.43" }

No other frameworks are being used other than moment.js and moment-timezone.js.

Issue description

Setting the timezone using moment.tz.setDefault("America/Los_Angeles") does not have effect on the retrieved date later on.

moment.tz.setDefault("America/Los_Angeles");
var date = moment.utc('2023-01-20T00:00:00').format();

• Expected date: 2023-01-19T00:00:00Z
• Actual date: 2023-01-20T00:00:00Z

Doing the same using moment.utc(date).tz("America/Los_Angeles")works as expected.

var date = moment.utc('2023-01-20T00:00:00').tz("America/Los_Angeles")

• Expected date: 2023-01-19T00:00:00Z
• Actual date: 2023-01-19T00:00:00Z

Here is a Fiddle that demonstrate it: https://jsfiddle.net/0sLyzvpb/7/

Is moment.tz.setDefault() having an issue?

[rzvdaniel]

Hi, guys!

Do no bother anymore with thicket, closing it.

I missed the fact that the project is in maintenance mode, so no point in chasing you any longer :P.

Good luck! Razvan

[gilmoreorless]

moment.utc() overrides the default to explicitly set the time zone as UTC. Calling just moment(dateString).format() should use the zone from moment.tz.setDefault() correctly.