# Tag History TStamp Question

**URL:** <https://forum.inductiveautomation.com/t/tag-history-tstamp-question/108926>\
**Category:** Ignition\
**Created:** [July 24, 2025, 7:32pm UTC](https://forum.inductiveautomation.com/t/tag-history-tstamp-question/108926 "2025-07-24T19:32:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ryan\_Amyette](https://avatars.discourse-cdn.com/v4/letter/r/90db22/32.png) [@Ryan\_Amyette](https://forum.inductiveautomation.com/u/Ryan_Amyette)\
**Post date:** [July 24, 2025, 7:32pm UTC](https://forum.inductiveautomation.com/t/tag-history-tstamp-question/108926/1 "2025-07-24T19:32:43Z")

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Hello,  
I started historizing a tag earlier this morning. Was wanting to grab a little more info on a particular record, but the t\_stamp (738465978334) that I am getting back for it is giving me a date back in 1993. Was wanting to see if I could get some help figuring out why

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/0/809008b40354d5c63f942045ff97f9b3e76e445f.png)

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [July 24, 2025, 7:51pm UTC](https://forum.inductiveautomation.com/t/tag-history-tstamp-question/108926/2 "2025-07-24T19:51:09Z")

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That usually means the OPC server supplying that tag has a broken clock. An accurate clock is **required** in OPC.

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<div class="post-metadata">

**Author:** ![Ryan\_Amyette](https://avatars.discourse-cdn.com/v4/letter/r/90db22/32.png) [@Ryan\_Amyette](https://forum.inductiveautomation.com/u/Ryan_Amyette)\
**Post date:** [July 24, 2025, 8:07pm UTC](https://forum.inductiveautomation.com/t/tag-history-tstamp-question/108926/3 "2025-07-24T20:07:01Z")

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> [@Ryan\_Amyette](#):
>
> 738465978334

Ok, that makes sense. Thank you for the reply