A timestamp identifies an instant, while a displayed date includes a time-zone interpretation. Confusing the two can make correct logs appear inconsistent.
Confirm the unit before comparing values. Unix…
Confirm the unit before comparing values. Unix APIs commonly use seconds, while JavaScript Date values use milliseconds.
Use UTC when communicating an instant across…
Use UTC when communicating an instant across systems. Convert to local time only for a human-facing display or a workflow that explicitly requires local time.
When diagnosing a mismatch, record the raw…
When diagnosing a mismatch, record the raw value, the unit, the time zone, and the formatting rule used by each system.
Use the related tool carefully
This guide is paired with a browser-only utility. The tool is a practical aid for small examples and inspection; it is not a substitute for application testing, a formal data pipeline, or professional review where the decision has higher consequences.
Open the related Unix Timestamp Converter