Switch Time Based Automation/Script

1

I have the below script to turn on a set of switches then turn them off after 4 hours and 15 minutes linked to an automation that switches them on at 16:45 every day.

The problem is, they turn on but don’t turn off.

Can anyone please point out where it’s going wrong?

Script:

freshen_up:
  alias: Freshen Up
  sequence:
    - service: switch.turn_on
      entity_id:
      - switch.air_freshener_kitchen
      - switch.air_freshener_landing
      - switch.air_freshener_master_bedroom
      - switch.air_freshener_living_room
    - delay:
        hours: 4
        minutes: 15
    - service: switch.turn_off
      entity_id:
      - switch.air_freshener_kitchen
      - switch.air_freshener_landing
      - switch.air_freshener_master_bedroom
      - switch.air_freshener_living_room

automation:

- alias: Freshen Up
  trigger:
    platform: time
    at: '16:45:00'
  action:
    service: script.freshen_up
2

I’ve solved this by simply changing the delay to

delay: 04:15