platform: template
sensors:
  sun_elevation:
    unique_id: templatesensor.sun_elevation
    value_template: "{{ state_attr('sun.sun', 'elevation') }}"
    unit_of_measurement: "degrees"
    icon_template: >
      {% set elevation = state_attr('sun.sun', 'elevation')|default(0) %}
      {% if elevation > 0 %}
        mdi:weather-sunny
      {% else %}
        mdi:weather-night
      {% endif %}

  period_of_day:
    unique_id: templatesensor.period_of_day
    friendly_name: Period of the Day
    value_template: >-
      {% if (as_timestamp(states.sun.sun.attributes.next_dusk)) - (as_timestamp(states.sun.sun.attributes.next_setting)) < 0 %}
        Dusk
      {% elif (as_timestamp(states.sun.sun.attributes.next_rising)) - (as_timestamp(states.sun.sun.attributes.next_dawn)) < 0 %}
        Dawn
      {% elif (states.sun.sun.attributes.elevation) < -4 %}
          Night
      {% else %}
          Day
      {% endif %}