Reading a iso8601 timestamp from a mqtt sensor

Configuration
,
1

I have an mqtt sensor that has a topic “rtl_433/SCAN/devices/Fineoffset-WN34/10809/time” with a value of that looks like “2023-08-21T04:49:00”.

I have a mqtt sensor in my configuration.yaml that has a device_class: “timestamp” and state_topic: “rtl_433/SCAN/devices/Fineoffset-WN34/10809/time”, but, when i look at the sensor value in the UI, its “Unknown”.

That is an iso standard compliant datetime string.

How do get it to appear as a date&time, and be able to date&time type things with it?

2

This isn’t a blueprints related question at all.
I suggest change the topic to just configuration, you will get more eyes on it to help.
Timestamps are not my thing personally.

3

Found the problem. Hassio templates will not parse an iso datetime string that does not have a tz offset part. The string has to look like 2023-08-22T22:46:28-0700 or it silently fails.