It's been a long while since my depressions were really that bad, with hypersomnia. I've been med compliant for many years. When they were, I wasn't exactly counting hours. So I can only estimate. My guess would be around 16 hours of sleep. However, even when I was awake, I didn't necessarily get out of bed for anything other than going to the toilet and maybe getting water and a bit of food. I lived in the bed during many bad depressions. I remember during my junior year of college not getting up or even going to classes for the majority of the semester. My grades were awful. I had also reduced my course load to the minimum. During another depression when living in Taiwan, I simply didn't go to work or classes for several days, barely eating. There was an earthquake of around 6.8 on the Richter Scale. I was in bed, with my bed sliding on the tiles from one side of the room to the other. I stayed in bed and then just went back to sleep immediately. Some days in my boss and his assistants came and took me to a hospital. There are other examples, too.

Have you ever had "bipolar blackouts" where you had amnesia of times during certain bipolar episodes?