How to get look and feel settings (especially ISO8601) through REST API?

[Deleted user]

We are working on a plugin for Jira Cloud. The user needs to access the date format settings that can be specified as Admin under Jira System administration > Look and Feel > Use ISO8601 standard in Date Picker.

My question is this:

Is there a way to read "Use ISO8601 standard in Date Picker" setting by a non-admin user?

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What I have tried:

The "Look and Feel" section is only very briefly mentioned in the API description page and I could not find enough information if it actually possible.

I have also tried looking at the existing DatePicker's code, I didn't find anything of help there either.

Found this issue that made wonder if that is possible at all.