[account42]

I just use en_DK which (while not perfectly named) is exactly there to solve this.

[SAI_Peregrinus]

That doesn't have `_` as the thousands separator. It uses ISO 8601 for date/times instead of RFC 3339 (so "2022-03-14T15:06:03 EDT" instead of "2022-03-14 15:06:03-04:00"), etc.

I just happen to want slightly different choices than it allows.