All Day events not working properly

[cpw7922]

My all day events are showing up as 8pm-8pm instead of All Day events. Non-All Day events show up just fine. Not sure if all_day or is_all_day is being looked at

v0.115 Calendar Card

Custom Calendar Card

message: Test
all_day: false
start_time: '2020-09-16 20:00:00'
end_time: '2020-09-17 20:00:00'
location:
  displayName: ''
  locationType: default
  uniqueIdType: unknown
  address: {}
  coordinates: {}
description: ''
offset_reached: false
data:
  - summary: Test
    description: ''
    location: ''
    categories: []
    sensitivity: Normal
    show_as: Free
    is_all_day: true
    attendees: []
    start: '2020-09-17T00:00:00+00:00'
    end: '2020-09-18T00:00:00+00:00'

[mshish]

I have the same issue. My all day events are shifted -4 hours off of midnight (which corresponds to my time zone). HA and my docker container have the correct timezone set and all appointments that are not all day appear with the correct start/end times in the calendar. I am happy to try and debug/track this bug down, but I'm new to HA plugins, so any pointers on where to look would be appreciated.

[boerjb]

Same here. "is_all_day: true in the payload but the attribute "all_day" is set to false. On top the entry shows up on two days as the day is shifted by one hour:
message: Birthday
all_day: false
start_time: '2020-12-14 01:00:00'
end_time: '2020-12-15 01:00:00'
location:
displayName: ''
locationType: default
uniqueIdType: unknown
address: {}
coordinates: {}
description: ''
offset_reached: false
data:

• summary: Birthday
  description: ''
  location: ''
  categories: []
  sensitivity: Normal
  show_as: Busy
  is_all_day: true
  attendees: []
  start: '2020-12-14T01:00:00+01:00'
  end: '2020-12-15T01:00:00+01:00'