How many hours of sleep before departure

When I step outside, the sky looks extremely angry and intimidating.

Fortunately, the rain isn't falling.

The power went out early in the morning, and I woke up to the sound of appliances turning on and off, so I couldn't sleep for a few hours. Now I'm heading to my in-laws' house.ㅜ

Since it's Parents' Day, I've been receiving calls to come down since early on, so I'm heading down... Wishing everyone a joyful holiday.