How to list multiple calendar event in a template

Configuration
,
133

I’m using the template from hpoperator but the events are not sorted. I tried some variants but the events are not sorted.

See the template here:

- trigger:
    - platform: time_pattern
      minutes: /1
  action:
    - service: calendar.get_events
      data:
        duration:
          hours: 720
          minutes: 0
          seconds: 0
        start_date_time: "{{ today_at() }}"
      target:
        entity_id: calendar.familienkalender
      response_variable: scheduled_events
    - variables:
        ev_list: |
          {% set ns = namespace(cal_events=[]) %}
          {%- for key, value in calendars.items() %}
            {%- for event in value.events %}
              {%- set ns.cal_events = ns.cal_events + [event] %}
            {%- endfor %}
          {%- endfor %}
          {{ ns.cal_events | sort(attribute='start') | list }}
  sensor:
    - name: Familienkalender Events
      unique_id: familienkalender_events
      state: "{{ ev_list | count }}"
      attributes:
        scheduled_events: "{{ ev_list }}"
      icon: mdi:calendar'