# CONVERT Modified dates, December 25th 2020 11:15:23 PM AND 12/25/2020 11:15:23 PM, to 2020-12-26T07:15:23Z AND 2020-12-25 23:15:23-08:00, to UTC **URL:** https://community.mp3tag.de/t/convert-modified-dates-december-25th-2020-1123-pm-and-12-25-2020-1123-pm-to-2020-12-26t0723z-and-2020-12-25-2323-08-00-to-utc/55899 **Category:** Support **Created:** [January 14, 2022, 11:49pm UTC](https://community.mp3tag.de/t/convert-modified-dates-december-25th-2020-1123-pm-and-12-25-2020-1123-pm-to-2020-12-26t0723z-and-2020-12-25-2323-08-00-to-utc/55899 "2022-01-14T23:49:28Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino) #### Post date: [January 15, 2022, 7:19am UTC](https://community.mp3tag.de/t/convert-modified-dates-december-25th-2020-1123-pm-and-12-25-2020-1123-pm-to-2020-12-26t0723z-and-2020-12-25-2323-08-00-to-utc/55899/2 "2022-01-15T07:19:25Z")
AFAIK the file time properties for creation, modification and access are managed by the OS and the OS and its local settings also determine the display format. Was it this thread: > [@Using ISO date format (YYYY-MM-DD HH:MM:SS)](https://community.mp3tag.de/t/using-iso-date-format-yyyy-mm-dd-hhss/46586/): > > Hello, I was wondering if there is a way to tag the earliest date associated with an MP4 video in the Title field... What I want to do is essentially, renaming MP4 files based on the following criteria... So I'm guessing the easiest way is to tag the TITLE field using Format Value with the format string as follows... %\_directory% - RETRIEVED %\_file\_create\_datetime% - %\_filename% Then, convert the title tag to filename... Unfortunately in doing this, it currently comes out in the weird Ameri… --- _[View the full topic](https://community.mp3tag.de/t/convert-modified-dates-december-25th-2020-1123-pm-and-12-25-2020-1123-pm-to-2020-12-26t0723z-and-2020-12-25-2323-08-00-to-utc/55899)._