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About this tool
Convert between Unix timestamps, ISO 8601 strings and local time, in both directions. It handles seconds and milliseconds, which is the mix-up that produces dates in 1970 or in the year 55000.Questions
- Is my timestamp in seconds or milliseconds?
- A ten-digit number is seconds; a thirteen-digit number is milliseconds. JavaScript’s Date.now() returns milliseconds, while most Unix tooling works in seconds.
- Why is my date off by a day?
- Almost always a timezone issue. The converter shows UTC and your local zone side by side so you can see which one you were reading.