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# Time zone support

We have added an optional `time_zone` field (based on the [IANA database](https://www.iana.org/time-zones) time zone values) to the Date objects. Developers can now explicitly set the time zones of Date property values using the `time_zone` field. Once this property is set explicitly, users will be able to see the same time zone in the app. When time zone information is provided in this method, `start` and `end` cannot contain [UTC offset](https://en.wikipedia.org/wiki/UTC_offset)s. In addition when time zone information is provided in dates, `start` and `end` cannot be dates without time information (i.e. `"2020-12-08"`).

The public API will always return the `time_zone` field as `null` when rendering dates and time zone will be displayed as a [UTC offset](https://en.wikipedia.org/wiki/UTC_offset) in the `start` and `end` date fields.