How do I check a RESTful sensor at a certain time each day

Configuration
1

I have a RESTful sensor that check a URL that changes over the course of the day and resets to zero at 19:00 each day. Just before it resets I want to read the value and save it.
Currently it check once every 24 hours, but when it checks is depending on when it started checking first time.

Can I change this so it checks every day at 18:45 before the reset to zero?
Current configuration

sensor:
  - platform: rest
      resource: https://rijkswaterstaatstrooit.nl/api/statistics
      value_template: "{{ value_json.dailySaltUsed }}"
      unit_of_measurement: "KG"
      device_class: "weight"
      name: rijkswaterstaatstrooit
      scan_interval: 86400
2

Set the scan interval to something very long (years).

Use an automation to update your sensor when you want:

trigger:
  - platform: time
    at: "18:59:50"  # ten seconds should be long enough to get a response. If not adjust this.
action:
  - service: homeassistant.update_entity
    entity_id: sensor.rijkswaterstaatstrooit

Note: the sensor will still update when you restart. Will that be a problem?