SharePoint Date Time 24 hour clock format not reflecting when editing list item

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Contributor

Some Recent Changes by Microsoft in SharePoint Date Time Column has caused it to stop working correctly.

There are two approaches to create date.

1. Classic Way : By going through list settings

2. Modern View : From Create a column in a list or library - SharePoint (microsoft.com)

 

Problem : When the regional setting is set to 24 hour clock, we see that date doesn't show correctly  for approach 1 (image1), but shows correctly for approach 2(image2) (but with some additional bugs as show in screenshot)

 

image1

harshdamaniahd_0-1621951912267.png

image2

apporach 2 works better than approach one, as it doesnt show am or pm , but still shows 12 hour clock when selecting dates.

harshdamaniahd_0-1622619978030.png

 

If we switch the list exp to classic mode, 24 hour clock works in approach 1.

It will also work in IE for approach 1

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