mqtt scheduler/timer – Internet of Things Stack Exchange

I am running a few devices in my house to collect data and enable/disable relays. All of the devices are esp8266 nodemcu with

  • pir sensor
  • 5v relays
  • sensors

and send over mqtt the data to a RPI that hosts the mqtt broker. Currently i am using Freeboard to present the data (temperature, humidity, relay status/control).
i would like to create a scheduler/timer when to enable/disable devices. For example switch on the relay named front_yard at 20:00 and switch it off at 07:30, every day.
Is there a way to create a set of schedules to serve settings like the aforementioned, please? I would prefer a graphical way to do it, if possible, please.

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