Bluetooth GATT Characteristic Reference
Local Time Information (0x2A0F)
Local Time Information is defined in the Bluetooth GATT XML specification with type org.bluetooth.characteristic.local_time_information and UUID 0x2A0F.
Quick Summary
Payload length is profile-defined or variable based on field formats. This page is generated from official GATT XML and presented as implementation-ready guidance.
At a Glance
Key reference details for BLE implementation, interoperability testing, and AI-assisted troubleshooting.
| Property | Value |
|---|---|
| Name | Local Time Information |
| UUID | 0x2A0F |
| Type | org.bluetooth.characteristic.local_time_information |
| XML Root | Characteristic |
| Source File | org.bluetooth.characteristic.local_time_information.xml |
| Field Count | 2 |
Field Specification
Parsed field definitions from the source XML value structure.
| Field | Requirement | Format | Unit | Exponent | Notes |
|---|---|---|---|---|---|
| Time Zone | Mandatory | N/A | - | - | - |
| Daylight Saving Time | Mandatory | N/A | - | - | - |
Byte Layout and Decode
Payload length is profile-defined or variable based on field formats.
function decodePayload(dataView, offset = 0) {
// Parse time_zone (N/A) according to Bluetooth format rules.
// Parse daylight_saving_time (N/A) according to Bluetooth format rules.
return { time_zone, daylight_saving_time };
}Use Cases and Integration Notes
BLE Telemetry
Map characteristic values into dashboards and alerts for device observability.
Firmware Regression
Compare decoded fields across builds to detect protocol or scaling changes.
App Integration
Build stable parsing paths that convert raw payloads into typed app models.
Implementation Checklist
- Validate payload length and mandatory fields before decode.
- Decode with Bluetooth-specified signedness, unit, and exponent handling.
- Convert units at presentation boundaries to avoid drift in business logic.
- Persist raw packets and decoded values for reproducible troubleshooting.
FAQ
What is Local Time Information in Bluetooth GATT?
Local Time Information is defined as a Bluetooth GATT characteristic entry with type org.bluetooth.characteristic.local_time_information and UUID 0x2A0F.
What UUID identifies Local Time Information?
The UUID for Local Time Information is 0x2A0F.
How should I parse Local Time Information?
Payload length is profile-defined or variable based on field formats.
Where does this definition come from?
This page is generated from the Bluetooth SIG mirror XML in the oesmith/gatt-xml repository.
How does this page support BLE implementation?
The page combines structured tables, practical Q&A, and JSON-LD metadata to help teams validate integrations and troubleshoot consistently.