Please explain the ETA attribute

[JeroenTuinstra]

Could someone please explain what the ETA attribute stands for. Is that literally 24hrs till the event? Because I have an event tomorrow morning and it gives me a ETA of 1, but the same day in the afternoon it gives me ETA of 2.

Had hoped the ETA was how many days removed from the current day.

[c2mfj]

I am also looking for this. Some "today" events have an eta of 0 while others are 1. I'm trying to leverage this attribute for my HA automation.

[Olen]

eta is whatever python counts as days until the event starts:

ical-sensor-homeassistant/custom_components/ical/sensor.py

Lines 154 to 156 in 38c802b

	self._event_attributes["eta"] = (
	start - datetime.now(start.tzinfo) + timedelta(days=1)
	).days

The code could obviously be changed to do something else tht might be a better solution, please consider creating a PR.