---
title: "Discussion on \"Is this timestamp in seconds or milliseconds? Guessing the unit from the digit count\" | Hashnode"
description: "Discussion on \"Is this timestamp in seconds or milliseconds? Guessing the unit from the digit count\". Guess a Unix timestamp's unit from its digit count, keep nanoseconds exact with BigInt, floor negative values and respect the JavaScript Date range."
url: "https://hashnode.com/posts/is-this-timestamp-in-seconds-or-milliseconds-guessing-the-unit-from-the-digit-count/6af538244f3323824270cb0c"
---

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# [Is this timestamp in seconds or milliseconds? Guessing the unit from the digit count](https://toolsyhub.hashnode.dev/is-this-timestamp-in-seconds-or-milliseconds-guessing-the-unit-from-the-digit-count?utm_source=hashnode&utm_medium=feed)

Guess a Unix timestamp's unit from its digit count, keep nanoseconds exact with BigInt, floor negative values and respect the JavaScript Date range.

21h ago · 3 min read · toolsyhub.hashnode.dev  
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