I am not sure if I am sleeping enough.

I'm 18 YO boy, Portuguese, 70Kg and 170cm tall. I've been sleeping in the wrong times, I usually wake up at 5pm and go to sleep at 5am but because because I sit on front of the computer screen all day every 4 days I wake up at 5 pm and end up staying up all night and going to bed at 11pm the next day (staying awake for 30hrs or so

5 6 7 8 9 10 11 12pm

1 2 3 4 5 6 7 8 9 10 11 12am

1 2 3 4 5 6 7 8 9 10 11pm)

Is what I am doing not healthy? I eat normally and go outside often.