How to specify the itemprop value in the duration?

Please tell me how to specify a itemprop="duration" with

<meta itemprop="duration" content="01:00">

With a duration of 1 hour shall be 01:00 or 01:00:00 ?
June 10th 19 at 14:52
1 answer
June 10th 19 at 14:54
Duration: The duration of The item (movie, audio recording, event, etc.) in ISO 8601 date format.

Go to Wikipedia, look, what is ISO 8601...
There's generally said that there are two formats for recording time - simple and advanced (with colons) and they are built on the following principle:
- hh
- hh:mm (hhmm)
- hh:mm:ss (hhmmss)
- hh:mm:ss.sss (hhmmss.sss)
In other words, the recording starts always with hours and as needed added minutes, seconds and milliseconds. What is easy to conclude that in your case both options point to one and the same time.
Very detailed answer! Thank you! - devin.Huels commented on June 10th 19 at 14:57

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