# What is the time stamp?

**URL:** https://meta.discourse.org/t/what-is-the-time-stamp/118723
**Category:** Support
**Created:** [May 26, 2019, 3:05pm UTC](https://meta.discourse.org/t/what-is-the-time-stamp/118723 "2019-05-26T15:05:00Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![Thomas\_G](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/thomas_g/32/200158_2.png) [@Thomas\_G](https://meta.discourse.org/u/Thomas_G)
#### Post date: [May 26, 2019, 3:34pm UTC](https://meta.discourse.org/t/what-is-the-time-stamp/118723/2 "2019-05-26T15:34:33Z")

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Changing Timestamp simply means you change the date and hour of the creation of a post or topic.

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Here is how to un-do it:

> [@Undo change timestamp](https://meta.discourse.org/t/undo-change-timestamp/78966):
>
> One of our mods changed the timestamp as a way to unbump a topic and I wanted to revert that change because. I wrote a rake task that does this. It’s a small thing, but why not share? # /var/www/discourse/lib/tasks/set\_timestamp\_to\_last\_version.rake desc "Set timestamp of all posts in a topic to the post's last\_version\_at" task "set\_timestamp\_to\_last\_version", [:topic\_id] =\> :environment do |\_, args| topic\_id = args[:topic\_id] if !topic\_id puts "ERROR: Expecting rake set\_timestamp\_to\_la…

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