Hot water boilers holiday mode

Hello,

I have just moved my smart home devices from Domoticz to Home Assistant and want to automate my hot water boilers further. Currently I use basic automation to turn them on at 23:00h and turn them off at 6:00 so I can take advantage of the off peak electricity tariff.
The question:
Is there a way to tell home assistant that I am going on a holiday for example from 1st of September to 10th of September so home assistant can disable the boiler automation on the 1st and enable it on the 9th(one day before I come back since the boilers work at night, so I can have hot water on the 10th). I guess I can figure out something in the config files but I was wondering If I can make it through the web interface from some sort of date picker or calendar card or just add an all-day event in my google calendar from 1st to 10th of September and integrate the calendar with home assistant. Have any of you did something similar?

There is no built in scheduler. You can do it a number of ways.

Thank you! I will try these things.