There is a subtype of Rapid-cycling bipolar disorder (four or more affective episodes yearly) where mood oscillations are manifested as abrupt mood shifts of less than 24 hours duration, known like ultra-ultra rapid or ultradian cycling.
Acctually, the rapid-cyclers are completing a mood cycle in a matter of days--or, more rarely, in hours.
Severe episodes of mania or depression in bipolar patient, may include symptoms of psychosis (or psychotic symptoms), like hallucinations and delusions.
If your state oscillate dramatically between depression and euphoria, and you feel marked irritability, in one day, you are having a mixed episode of bipolar disorder.
Multiple mixed episodes in one day are characteristic of ultra-ultra or ultradian cycling.
People with mixed episodes are at great risk for suicide and exhibiting delusions and hallucinations.

Do you get usual shift from feeling upset to feeling "OK," or, from feeling bad to feeling a high or elevated mood?
Do the mood shifts occur out of the blue, or, are, always in reaction to something that have happened?

great!

usually it comes out of nowhere and my moods range between happy sad angry anxious and a weird mood I don't know how to explain, all of are VERY extreme. but I was recently diagnosed with hypomanic bipolar, anxiety, and ADHD