HA: Trigger-based Template sensors for a selection of US Holidays

holidays_template_sensors.yaml

template:
  - trigger:
      - platform: homeassistant
        event: start
      - platform: time
        at: "00:00:01"
    sensor:
      - name: "New Years Day"
        unique_id: "37319374975705055206"
        state: >
          {%- set today = now().date() %}
          {% set new_years = today.replace(month=1, day=1) %}
          {% if new_years < now().date() %}
          {% set new_years = today.replace(month=1, day=1, year= (now().year + 1)) %}
          {% endif %}
          {{ new_years }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {% set new_years = today.replace(month=1, day=1) %}
            {% if new_years < now().date() %}
            {% set new_years = today.replace(month=1, day=1, year= (now().year + 1)) %}
            {% endif %}
            {% set x = new_years|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: "Dia de Los Reyes"
        unique_id: "1984497531937520705056"
        state: >
          {%- set today = now().date() %}
          {% set los_reyes = today.replace(month=1, day=6) %}
          {% if los_reyes < now().date() %}
          {% set los_reyes = today.replace(month=1, day=6, year= (now().year + 1)) %}
          {% endif %}
          {{ los_reyes }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {% set los_reyes = today.replace(month=1, day=6) %}
            {% if los_reyes < now().date() %}
            {% set los_reyes = today.replace(month=1, day=6, year= (now().year + 1)) %}
            {% endif %}
            {% set x = los_reyes|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: "Martin Luther King Jr"
        unique_id: "496217893819475026"
        state: >
          {%- set month, week, day = 1, 3, 0 %} 
          {%- set today = now().date() %}
          {%- set temp = today.replace(month=month, day=1) %}
          {%- set adjust = (day - temp.weekday()) % 7 %}
          {%- set temp = temp + timedelta(days=adjust) %}
          {%- set mlk = temp + timedelta(weeks = week-1) %}
          {% set mlk = mlk|string|as_datetime|as_local %}
          {{ iif(mlk < now(), (mlk + timedelta(days=365)).date(), mlk.date()) }}
        attributes:
          days_until: >
            {%- set month, week, day = 1, 3, 0 %} 
            {%- set today = now().date() %}
            {%- set temp = today.replace(month=month, day=1) %}
            {%- set adjust = (day - temp.weekday()) % 7 %}
            {%- set temp = temp + timedelta(days=adjust) %}
            {%- set mlk = temp + timedelta(weeks = week-1) %}
            {% set mlk = mlk|string|as_datetime|as_local %}
            {% set x = mlk|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: "Valentines Day"
        unique_id: "22719844595073910047"
        state: >
          {%- set today = now().date() %}
          {% set valentines = today.replace(month=2, day=14) %}
          {% if valentines < now().date() %}
          {% set valentines = today.replace(month=2, day=14, year= (now().year + 1)) %}
          {% endif %}
          {{ valentines }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {% set valentines = today.replace(month=2, day=14) %}
            {% if valentines < now().date() %}
            {% set valentines = today.replace(month=2, day=14, year= (now().year + 1)) %}
            {% endif %}
            {% set x = valentines|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: "Saint Patricks Day"
        unique_id: "44595073912271980047"
        state: >
          {%- set today = now().date() %}
          {% set st_patricks = today.replace(month=3, day=17) %}
          {{ st_patricks }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {% set st_patricks = today.replace(month=3, day=17) %}
            {% set x = st_patricks|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: "Mardi Gras"
        unique_id: "734459509122779462132"
        state: >
          {%- set today = now().date() %}
          {% set easters = ['2022-04-17', '2023-04-09', '2024-03-31', '2025-04-20', '2026-04-05', '2027-03-28'] %}
          {% set mardi_gras = easters|select('gt', today|string)|first %}
          {{ (mardi_gras|as_datetime - timedelta(days = 47)).date()}}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {% set easters = ['2022-04-17', '2023-04-09', '2024-03-31', '2025-04-20', '2026-04-05', '2027-03-28'] %}
            {% set mardi_gras = easters|select('gt', today|string)|first %}
            {% set x = (mardi_gras|as_datetime - timedelta(days = 47)).date() %}
            {% set x = ((x - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: "Easter"
        unique_id: "189497506268132794"
        state: >
          {%- set today = now().date() %}
          {% set easters = ['2022-04-17', '2023-04-09', '2024-03-31', '2025-04-20', '2026-04-05', '2027-03-28'] %}
          {% set next_easter = easters|select('gt', today|string)|first %}
          {{ next_easter }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {% set easters = ['2022-04-17', '2023-04-09', '2024-03-31', '2025-04-20', '2026-04-05', '2027-03-28'] %}
            {% set next_easter = easters|select('gt', today|string)|first %}
            {% set x = next_easter|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: "Mothers Day"
        unique_id: "749819475062189326"
        state: >
          {%- set month, week, day = 5, 2, 6 %} 
          {%- set today = now().date() %}
          {%- set temp = today.replace(month=month, day=1) %}
          {%- set adjust = (day - temp.weekday()) % 7 %}
          {%- set temp = temp + timedelta(days=adjust) %}
          {%- set mothers_day = temp + timedelta(weeks = week-1) %}
          {{ mothers_day }}
        attributes:
          days_until: >
            {%- set month, week, day = 5, 2, 6 %} 
            {%- set today = now().date() %}
            {%- set temp = today.replace(month=month, day=1) %}
            {%- set adjust = (day - temp.weekday()) % 7 %}
            {%- set temp = temp + timedelta(days=adjust) %}
            {%- set mothers_day = temp + timedelta(weeks = week-1) %}
            {% set x = mothers_day|string%}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: "Fathers Day"
        unique_id: "962741899473268150"
        state: >
          {%- set month, week, day = 6, 3, 6 %} 
          {%- set today = now().date() %}
          {%- set temp = today.replace(month=month, day=1) %}
          {%- set adjust = (day - temp.weekday()) % 7 %}
          {%- set temp = temp + timedelta(days=adjust) %}
          {%- set fathers_day = temp + timedelta(weeks = week-1) %}
          {{ fathers_day }}
        attributes:
          days_until: >
            {%- set month, week, day = 6, 3, 6 %} 
            {%- set today = now().date() %}
            {%- set temp = today.replace(month=month, day=1) %}
            {%- set adjust = (day - temp.weekday()) % 7 %}
            {%- set temp = temp + timedelta(days=adjust) %}
            {%- set fathers_day = temp + timedelta(weeks = week-1) %}
            {%- set x = fathers_day|string%}   
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: Halloween
        unique_id: "947396278926815041"
        state: >
          {%- set today = now().date() %}
          {% set halloween = today.replace(month=10, day=31) %}
          {{ halloween }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {% set halloween = today.replace(month=10, day=31) %}
            {% set x = halloween|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: "Veterans Day"
        unique_id: "31975705053740693752"
        state: >
          {%- set today = now().date() %}
          {% set veterans = today.replace(month=11, day=11) %}
          {% if veterans < now().date() %}
          {% set veterans = today.replace(month=11, day=11, year= (now().year + 1)) %}
          {% endif %}
          {{ veterans }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {% set veterans = today.replace(month=11, day=11) %}
            {% if veterans < now().date() %}
            {% set veterans = today.replace(month=11, day=11, year= (now().year + 1)) %}
            {% endif %}
            {% set x = veterans|string %}          
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: Christmas
        unique_id: "14318885502034384968"
        state: >
          {%- set today = now().date() %}
          {% set christmas = today.replace(month=12, day=25) %}
          {{ christmas }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {% set christmas = today.replace(month=12, day=25) %}
            {% set x = christmas|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: Thanksgiving
        unique_id: "69425309251060427914"
        state: >
          {%- set month, week, day = 11, 4, 3 %} 
          {%- set today = now().date() %}
          {%- set temp = today.replace(month=month, day=1) %}
          {%- set adjust = (day - temp.weekday()) % 7 %}
          {%- set temp = temp + timedelta(days=adjust) %}
          {%- set thanksgiving = temp + timedelta(weeks = week-1) %}
          {{ thanksgiving }}
        attributes:
          days_until: >
            {%- set month, week, day = 11, 4, 3 %} 
            {%- set today = now().date() %}
            {%- set temp = today.replace(month=month, day=1) %}
            {%- set adjust = (day - temp.weekday()) % 7 %}
            {%- set temp = temp + timedelta(days=adjust) %}
            {%- set thanksgiving = temp + timedelta(weeks = week-1) %}
            {% set x = thanksgiving|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: Independence Day
        unique_id: "9084317551034684857"
        state: >
          {%- set today = now().date() %}
          {%- set temp = today.replace(month=7, day=4) %}
          {%- set independence = temp %}
          {{ independence }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {%- set temp = today.replace(month=7, day=4) %}
            {%- set x = temp|string %}          
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: Memorial Day
        unique_id: "20611770923315821822"
        state: >
          {%- set month, week, day = 5, 5, 0 %} 
          {%- set today = now().date() %}
          {%- set temp = today.replace(month=month, day=1) %}
          {%- set adjust = (day - temp.weekday()) % 7 %}
          {%- set temp = temp + timedelta(days=adjust) %}
          {%- set memorial = temp + timedelta(weeks = week - 1) %}
          {{memorial}}
        attributes:
          days_until: >
            {%- set month, week, day = 5, 5, 0 %} 
            {%- set today = now().date() %}
            {%- set temp = today.replace(month=month, day=1) %}
            {%- set adjust = (day - temp.weekday()) % 7 %}
            {%- set temp = temp + timedelta(days=adjust) %}
            {%- set memorial = temp + timedelta(weeks = week - 1) %}          
            {% set x = memorial|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: Labor Day
        unique_id: "78754309251267813130"
        state: >
          {%- set month, week, day = 9, 1, 0 %} 
          {%- set today = now().date() %}
          {%- set temp = today.replace(month=month, day=1) %}
          {%- set adjust = (day - temp.weekday()) % 7 %}
          {%- set temp = temp + timedelta(days=adjust) %}
          {%- set labor = temp + timedelta(weeks = week - 1) %}
          {{labor}}
        attributes:
          days_until: >
            {%- set month, week, day = 9, 1, 0 %} 
            {%- set today = now().date() %}
            {%- set temp = today.replace(month=month, day=1) %}
            {%- set adjust = (day - temp.weekday()) % 7 %}
            {%- set temp = temp + timedelta(days=adjust) %}
            {%- set labor = temp + timedelta(weeks = week - 1) %}
            {% set x = labor|string%}          
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: Dia de Muertos
        unique_id: "9750858485431103467"
        state: >
          {%- set today = now().date() %}
          {%- set muertos = today.replace(month=11, day=2) %}
          {{ muertos }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {%- set muertos = today.replace(month=11, day=2) %}
            {% set x = muertos|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"

      - name: Rex Manning Day
        unique_id: "4690662543745975107"
        state: >
          {%- set today = now().date() %}
          {%- set rex_manning = today.replace(month=4, day=8) %}
          {{ rex_manning }}
        attributes:
          days_until: >
            {%- set today = now().date() %}
            {%- set rex_manning = today.replace(month=4, day=8) %}          
            {% set x = rex_manning|string %}
            {% set x = (((x|as_datetime|as_local).date() - now().date()).days)|int %}
            {{ iif(x < 1, x + 365, x) }}
        availability: "{{ now() is defined }}"