Answers.Body: <p>Adding as an official answer since we've had a handful of reports about this.  Best we can tell it's a bug in Firefox that happens when you live in a non-UTC timezone.  There are several Date related bugs in Mozilla's bug tracker, but this one looks to be the most relevant: <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1227499" rel="nofollow">https://bugzilla.mozilla.org/show_bug.cgi?id=1227499</a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-05-11T16:18:36.630Z
Answers.LastActivityDate: 2016-05-11T16:18:36.630Z
Answers.UserDisplayName: Brad Bell
Body: <p>When I edit an existing entry the post date jumps ahead by an hour meaning I have to manually remove it before saving the changes.</p>
  
  <p>I thought it may have something to do with the timezone but this is set to the correct timezone.</p>
  
  <p>Has anyone come across this?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-05-11T11:39:41.200Z
Comments.Text: Yes! Is it in Firefox? And are you in a timezone that is not UTC? If so (like me) then it will jump by the offset I think. It is essentially a bug with FF (https://bugzilla.mozilla.org/show_bug.cgi?id=1227499) because if you type `new Date()` into the console of FF you get the wrong time there.
Comments.UserDisplayName: Josh Angell
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-05-11T12:14:07.910Z
Comments.Text: Yes I'm using FF and I'm set to the London timezone. I'm going to test it out on chrome! Thanks for the link
Comments.UserDisplayName: JRW
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-05-11T12:49:36.783Z
Comments.Text: No worries! Yes I chatted with Brad of P&T and we just agreed to not use FF ...
Comments.UserDisplayName: Josh Angell
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-05-11T14:32:46.667Z
Comments.Text: Ran into this too. It's a very strange bug in FireFox. Even in the latest version  - 46.0.1. Just as well there are other decent browsers about.
Comments.UserDisplayName: John Macpherson
Tags: <postdate>
Title: postDate keeps jumping ahead when editing an entry
ThreadText: # postDate keeps jumping ahead when editing an entry
  
  (Asked by: username_0 on 2016-05-11)
  
  When I edit an existing entry the post date jumps ahead by an hour meaning I have to manually remove it before saving the changes.
  
  I thought it may have something to do with the timezone but this is set to the correct timezone.
  
  Has anyone come across this?
  
  **Tags:** postdate
  
  > **Comments:**
  > **username_1**: Yes! Is it in Firefox? And are you in a timezone that is not UTC? If so (like me) then it will jump by the offset I think. It is essentially a bug with FF (https://bugzilla.mozilla.org/show_bug.cgi?id=1227499) because if you type `new Date()` into the console of FF you get the wrong time there.  
  > **username_0**: Yes I'm using FF and I'm set to the London timezone. I'm going to test it out on chrome! Thanks for the link  
  > **username_1**: No worries! Yes I chatted with username_3 of P&T and we just agreed to not use FF ...  
  > **username_2**: Ran into this too. It's a very strange bug in FireFox. Even in the latest version  - 46.0.1. Just as well there are other decent browsers about.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_3 on 2016-05-11. Score: 2 | Accepted answer
  
  Adding as an official answer since we've had a handful of reports about this. Best we can tell it's a bug in Firefox that happens when you live in a non-UTC timezone. There are several Date related bugs in Mozilla's bug tracker, but this one looks to be the most relevant: <https://bugzilla.mozilla.org/show_bug.cgi?id=1227499>
  
  
  ---
  
  