Strange behaviour with next_alarm entity provided by HA App

[Hellis81]

This is the template I’m using

"human friendly" template for next alarm (companion app)

I don’t like the timestamp format used by the app(s) so I first did a simple Y-m-d H:m format, but even that looked unnatural. 2020-09-30… instead of just “tomorrow”. So I decided to build a template that makes a human friendly format. Unavailable is replaced with “No alarm” “Today hh:mm” “Tomorrow hh:mm” “Monday hh:mm” (where monday is in local language) “2020-10-05 hh:mm” if the date is more than a week away of course the actual format can be changed. The first five lines is the part tha…

It doesn’t do anything more than change the format.
The strange thing is that some days it’s +1 min and sometimes -3 mins and anything in between.

I believe it’s a problem with jinja/HA not the app, to be clear.