# SetSystemTimeRequest - Source proto: `rb/api/system.proto` Request to set system time. | Field | Type | Label | Description | | ----- | ---- | ----- | ----------- | | request_header | [RequestHeader](../header/requestheader.md#rb-api-requestheader) | | | | utc_time | [google.protobuf.Timestamp](https://protobuf.dev/reference/protobuf/google.protobuf/#timestamp) | | | | time_zone | [string](../scalar-value-types.md#scalar-value-types) | | https://en.wikipedia.org/wiki/List_of_tz_database_time_zones |