Offset for time conditions

Feature Requests
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#1

Sun conditions support optional offset value ( before_offset , after_offset )

I’d like to see the same feature for time conditions.

Example of how it could look like:

condition: time
before: input_datetime.bedtime
before_offset: '-00:15:00'

Current workaround with templates is rather difficult to read.

#2

Especially useful for alarms, like turning on the heating an hour before waking you up :+1:

#3

Just to give you an option.

This is also a working solution. Not sure if it’s better.

{{ strptime(states('input_datetime.bedtime'), '%Y-%m-%d %H:%M:%S') - timedelta( minutes = 1 ) }}

You could format it like this:

{{ strptime(states('
input_datetime.bedtime'), '%Y-%m-%d %H:%M:%S') 
- timedelta( minutes = 1 ) }}

Now you can kind of read input_datetime.bedtime - timedelta if you read up -> down