My home is in London UK and is relatively small and efficient, but 8kWh may be higher than our peak demand ever over more than 20 years in this house...
I think the only way most people could get to 8kW continuous without an EV would be to turn on their electric oven, grill, and all spots on their electric hob. And the kettle.
It's by hour, and the highest times are probably when I was cooking with both the oven and the hob, and perhaps had the washing machine running too. The highest hour used 2.9kWh.
Plenty of cheap (e.g. rental) homes in the UK have crappy electric shows, which are usually rated at 6-8kW — but rarely used for a whole hour.
But also it is unlikely that we used 24kWh in any one day ever.