Synchronise Time

The clock inside the Studer RCC will slowly drift out of sync with actual time. Moreover, it will not automatically switch from and to daylight savings time leading to a one hour offset during half of the year.

Both these issues can easily be resolved by configuring the following automation in Home Assistant; it will correct the time once a day. The chosen trigger time of 3:05am is so that it is after any daylight savings time adjustment.

alias: Studer RCC Sync Time
description: ""
triggers:
  - trigger: time_pattern
    hours: "3"
    minutes: "0"
    seconds: "5"
conditions: []
actions:
  - action: datetime.set_value
    target:
      entity_id: datetime.studer_4001_rcc_5002
    data:
      datetime: "{{ now() }}"
mode: restart