We noticed that Contentful defaults to the user’s timezone then converts our timezone to UTC Z (0) when we use the Date Picker with “Date and time with timezone” format. However, it does not convert timezone with using the “Date and time without timezone”. It instead defaults that to UTC Z (0). I would expect both formats to default to the user’s timezone and convert to UTC Z. Otherwise, users are going to expect both cases to represent their timezone but in fact wind up with mixed timezone data in the database.