Home Assistant Blueprint for 'persistent' Sunset with a time offset triggered actions

persistent_sunset_offset_actions.yaml

# Author Eric Kreuwels, Copyright 2022, publiced under the free MIT license conditions
blueprint:
  name: Actions at Sunset Offset
  description: Persistant offset based actions around sunset. These actions can be any sequence including checking additional conditions if you like
  domain: automation
  input:
    time_shift:
      name: Time Shift
      description: Using time shift around Sunrise. A negative value is earlier, a positive value is later.
      default: "-00:01:00"
      selector:
        text: {}
    trigger_at_startup:
      name: Trigger at Home Assistant startup
      description: Trigger the target state check and enforcement at Home Assistant. This check is only effective between Solar Noon and Solar Midnight. 
      default: true
      selector:
        boolean: {}
    sunset_actions:
      name: Sunset Actions
      description: Action to run at the defined elevations around sunset
      default: []
      selector:
        action: {}


# Prevent the automation from running concurrently
mode: single

# Define the variables used in the action section
variables:
  trigger_at_startup: !input 'trigger_at_startup'

# Define the trigger for the automation
trigger:
- platform: sun
  event: sunset
  offset: !input time_shift 
- platform: homeassistant
  event: start
  
condition:
# check if the sun is settling (between noon and midnight only)
- condition: state
  entity_id: sun.sun
  attribute: rising
  state: false
# check is it is after the defined offset
- condition: sun
  after: sunset
  after_offset: !input time_shift 
# check if persistency state actions are needed
- condition: template
  value_template: '{{ trigger.platform!="homeassistant" or trigger_at_startup }}'
  
# now() > today_at("10:15")
# today_at("20:33") >= as_datetime(state_attr("sun.sun", "next_setting")) + timedelta( hours = -24, minutes = 10) 
action: !input sunset_actions