I’m trying todo what seams like it should be simple. I want to preserve a date time value past reboots so I created an input_datetime which I’ve tried to set to different values, both datetime and timestamp and the take its value in a template and use it in relative_time(), but it just won’t work. If I access .last_updated it works, so it must be something with the value.
Could someone please point me in the right direction on how to achieve this?
Set value
service: input_datetime.set_datetime
target:
entity_id: input_datetime.ip_last_changed
data:
datetime: "{{ now().strftime('%Y-%m-%dT%H:%M:%S%z') }}"
This is the template:
last changed {{ strptime('states.input_datetime.ip_last_changed.state', '%Y-%m-%dT%H:%M:%S%z', 0)}} ago