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What time is this?

Paste an epoch number, a date, or a MongoDB ObjectId. The answer shows up as you type.

Try:

How to use it

  1. Paste into the box: an epoch in seconds (1789995600) or milliseconds (1789995600000), a date like 2026-09-21 18:30, or a MongoDB ObjectId. ObjectId("...") and {"$date": ...} as copied from Mongo work too.
  2. The answer shows up as you type: the time where you are, UTC, ISO 8601, and epoch in seconds and milliseconds.
  3. Going the other way? Type or pick a date to get its epoch and an ObjectId, plus a ready-made Mongo query for documents created after it.
  4. Press Copy next to any line, or Copy link to this to share the exact answer.