# Webhook documentation shows unusual date/time format

**URL:** <https://devforum.zoom.us/t/webhook-documentation-shows-unusual-date-time-format/147462>\
**Category:** API and Webhooks\
**Created:** [October 27, 2026, 5:56pm UTC](https://devforum.zoom.us/t/webhook-documentation-shows-unusual-date-time-format/147462 "2026-10-27T17:56:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![desautelsj](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/desautelsj/32/23584_2.png) [@desautelsj](https://devforum.zoom.us/u/desautelsj)\
**Post date:** [October 27, 2026, 5:56pm UTC](https://devforum.zoom.us/t/webhook-documentation-shows-unusual-date-time-format/147462/1 "2026-10-27T17:56:52Z")

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Generally speaking, the Zoom API returns date in the following format:` yyyy-MM-dd’T’HH:mm:ssZ`

There are exceptions where dates are returned as a number which represents the number of ticks since the Epoch .

Today I found yet another format in the documentation: the sample data for`date_time` in the `meeting.chat_mesage_file_sent` webhook is `GMT20220110-072010` as you can see in this screenshot:

 ![image](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/f/a/fa299b591c3783a772245a845deb29de895b32ff.png)

Is this a typo in the documentation or is this another format that my JSON parsing code should handle?

I also found the same unusual date format in the `meeting.chat_mesage_sent`, `webinar.chat_mesage_file_sent`and `webinar.chat_mesage_sent`webhooks.

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**Author:** ![Johan2](https://avatars.discourse-cdn.com/v4/letter/j/71e660/32.png) [@Johan2](https://devforum.zoom.us/u/Johan2)\
**Post date:** [October 28, 2026, 5:23am UTC](https://devforum.zoom.us/t/webhook-documentation-shows-unusual-date-time-format/147462/2 "2026-10-28T05:23:31Z")

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Good catch, that format does look inconsistent with the usual date format. Have you seen the same value in a live webhook payload, or only in the sample data in the documentation?

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**Author:** ![desautelsj](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/desautelsj/32/23584_2.png) [@desautelsj](https://devforum.zoom.us/u/desautelsj)\
**Post date:** [October 28, 2026, 11:52pm UTC](https://devforum.zoom.us/t/webhook-documentation-shows-unusual-date-time-format/147462/3 "2026-10-28T23:52:33Z")

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I haven’t received a `meeting.chat_mesage_file_sent` webhook yet, so I am unable to verify whether this is an actual problem or if it’s limited to the documentation.

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**Author:** ![elisa.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elisa.zoom/32/47836_2.png) [@elisa.zoom](https://devforum.zoom.us/u/elisa.zoom)\
**Post date:** [October 29, 2026, 6:56pm UTC](https://devforum.zoom.us/t/webhook-documentation-shows-unusual-date-time-format/147462/4 "2026-10-29T18:56:37Z")

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Thanks for reahcing out about this @desautelsj  
Let me test this on my end and will update the thread here!