Log Timestamp Formats Converter
Log files from different systems timestamp in different dialects: Syslog RFC 3164 (`Aug 13 14:30:00`), Apache/Nginx combined log (`13/Aug/2026:14:30:00 +0000`), Docker JSON log (ISO 8601 with nanos), Splunk (`2026-08-13T14:30:00.000+00:00`) and Android Logcat (`08-13 14:30:00.123`).
This converter renders your date-time in each of these five log dialects so you can generate test fixtures, validate parsers, and correlate events across heterogeneous log sources.
Log Timestamp Formats Converter Quick Reference
| Format | Pattern / Description | Example 1 | Example 2 |
|---|---|---|---|
| Syslog (RFC 3164) | System logs | Aug 13 14:30:00 | Jan 01 00:00:00 |
| Apache / Nginx Log | Common Log Format | 13/Aug/2026:14:30:00 Z | 01/Jan/2026:00:00:00 Z |
| Docker Log Timestamp | ISO 8601 with nanoseconds | 2026-08-13T14:30:00.000000000Z | 2026-01-01T00:00:00.000000000Z |
| Splunk Timestamp | MM/dd/yyyy:HH:mm:ss | 08/13/2026:14:30:00 | 01/01/2026:00:00:00 |
| Android Logcat | MM-dd HH:mm:ss.mmm | 08-13 14:30:00.000 | 01-01 00:00:00.000 |
* Examples are rendered in UTC for the fixed sample instants above.
When to Use Log Timestamp Formats
Log parser validation
Generate a known event time in each log dialect and confirm your parsing pipeline extracts the correct timestamp.
Cross-system correlation
When the same event appears in Apache, syslog and Docker logs, convert between dialects to confirm they refer to the same instant.
Test fixture generation
Create realistic log lines with accurate timestamps for unit tests and load testing without hand-editing.
Frequently Asked Questions
What is the syslog timestamp format?
RFC 3164 uses `Mmm dd HH:mm:ss` (e.g. `Aug 13 14:30:00`); RFC 5424 (modern) uses ISO 8601 with offset: `2026-08-13T14:30:00+00:00`.
What is the Apache log date format?
The combined log format uses `dd/MMM/yyyy:HH:mm:ss Z` — e.g. `13/Aug/2026:14:30:00 +0000`. Note the colon after the year and the numeric offset.
What format does Docker use for logs?
Docker JSON-file logs emit ISO 8601 with nanoseconds: `2026-08-13T14:30:00.123456789Z`.
How do I convert log times between formats?
Paste any timestamp from one dialect — the engine parses it, then switch the output to the target dialect. All rows update to the same instant.
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