Difference between Date Format on AGOL Map and embedded map on website

Question

I have a web map in AGOL where the date attribute is set to display at DD/MM/YYYY. When I test this in AGOL it works fine. However when I use the JS API V4.12 to embed the web map onto my website it reverts to the default date format, MM/DD/YYYY.

See attached.

Does the popup date format need to be forced to DD/MM/YYYY in the embedded map using JS, if so how is this achieved?

Many thanks.

Untitled-2.jpg

Anonymous User · Answer

I think as a community we need to have something like this idea

ESRI default date JSON display format across entire suite of platforms

BrendanCunningham1 · Answer

Thanks all, I made some headway with this approach: insofar as the date format changed... but I couldn't get the proper date DD/MM/YYYY to display. In the end I reverted to one of the other date options in the web map "December 21 1997" and that sufficed. It's a confusing one as it doesn't seem easy to trace to an exact cause. Thanks for your help.

Noah Sager · Answer

Formatting the popup content is a good idea.

Another thought is that it looks like you might have specified some localization in Portal/AGO? I believe this would account for the DD/MM/YYYY format. Either that or AGO is smart enough to recognize the date format of the region you are connecting from.

Set language and region—ArcGIS Online Help | ArcGIS

In the JS API app, you could try using the English (en) locale to see if the European date format persists

Localization | ArcGIS API for JavaScript 4.12

Lastly, you could construct an arcade expression in the popup to display the date in a logical format.

Date Functions | ArcGIS for Developers