Protocol scope and method
The protocol field contains two digits for year, month, day, hour, minute and second. Timezone meaning should follow the selected edition and project profile.
YY MM DD hh mm ss ↔ six packed BCD bytes.
Diagnostic scenario
Decode a six-byte BCD timestamp from a known message and compare every component with the terminal log. For encoding, use a controlled local timestamp and verify the produced bytes on a test platform with an explicitly documented timezone convention.
How to interpret the result
BCD validates decimal digit packing but not calendar plausibility, timezone or clock accuracy. A syntactically valid time can still be impossible, stale or shifted by an undocumented UTC/local-time assumption.
Input reference
- Mode
- Example default: BCD to time
- BCD hex or YYYY-MM-DD HH:mm:ss
- Example default: Sample input included
Common mistakes
- Using an unredacted production capture with vehicle, credential or network identifiers.
- Assuming the six-byte field carries a timezone or Unix epoch.
- Treating a successfully parsed sample as standards compliance or interoperability proof.
Before using the result
- Confirm the protocol edition, transport framing and vendor profile before interpreting fields.
- Check calendar ranges and compare with the project timezone policy.
- Keep a redacted known-good and known-bad sample as a regression pair.
Questions to check during diagnosis
Does the JT/T 808 BCD Time Converter leave my browser?
No application upload is used. Avoid putting sensitive production data in shareable URLs.
Is this a standards compliance test?
No. Confirm the edition and vendor profile with licensed documents and your target platform.
Offline diagnostic aid. Verify fields, version and vendor extensions before production use.