The iObeya REST API uses the ISO 8601 standard to manipulate dates and times.
You can use any timezone to request the API but the date time in responses will always be set to the UTC timezone to avoid any confusion.
Examples
Date: 2021-11-22
UTC date time: 2021-11-22T10:46:01Z
UTC+2 date time: 2021-11-22T10:46:01+02:00