Use a calendar to control when a switch should be turned on/off

switch_calendar.yaml

blueprint:
  name: Switch on Calendar
  description: Use a calendar for managing a switch schedule.  Switch is turned on according the calendar schedule.
  domain: automation
  input:
    calendar_sensor:
      name: Calendar Sensor
      selector:
        entity:
          domain:
          - calendar
          - binary_sensor
    target_switch:
      name: Switch
      selector:
        target:
          entity:
            domain: switch

variables:
  cal_switch: !input calendar_sensor

trigger:
- platform: state
  entity_id: !input calendar_sensor

action:
  service: "{{ iif(is_state(cal_switch, 'on'), 'switch.turn_on', 'switch.turn_off') }}"
  target: !input target_switch