I send request via REST API
https://www.mysite.pl/rest/V1/orders/89
And have date and time: "created_at": "2021-09-21 15:59:34",
When I go to Saels->Orders in admin there is different data and time: "Sep 21, 2021, 5:59:34 PM"
So there is a 2 hours difference. I think this cause a problem with my payment module. In admin timezone is set to CET Warsaw. Why in REST API call there is other time ?
I fixed this issue for me by selecting the "Coordinated Universal time" in admin: Store -> configuration -> General -> General -> Local Options