Time guides

2 practical guides on time topics. Each one ends with a free tool that runs entirely in your browser.

• Unix Timestamps Explained: Seconds, Milliseconds, and Time Zones

  What a Unix timestamp is, how to tell seconds from milliseconds, why it has no time zone, how to convert in code, and the bugs (including the Year 2038 problem) that catch people out.

  3 min read · Unix Timestamp Converter

• Time Zone Conversion: 7 Mistakes That Break Schedules and Timestamps

  Store UTC, use IANA zone names, respect daylight saving, and avoid ambiguous abbreviations like EST. The practical rules for handling time zones correctly.

  2 min read · Timezone Converter

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