This might be more missing time technically, but it was anomalous none the less.
In 1988, I was stationed at Fort Detrick in Maryland, and I was living in an apartment off post. I had to show up for formation and PT at 5:45 sharp every morning, and I had been in the Army for 4 years already, so I was used to this.
One cold morning in February, I got up at 5am, got dressed, and left my place at 5:20 for a normal 10 minute drive to my company.
I know it was 5:20 when I left, I saw the clock in my kitchen and looked at my watch.
I remember nothing unusual about the drive.
When I pulled into the parking lot, my company was well into exercises...and I thought "What the Hell?"
I looked at my watch and it said 6:08!!!!
I got into trouble for being late because I had no idea what had happened to those 50 minutes, and of course my first sergeant thought I was just goofing.
There is no way it took me 50 minutes to drive less than 5 miles. I later checked my alarm clock, it was fine and never did anything funny after that.
What the hell happened to those 50 freakin minutes? I drove my buddies crazy talking about it so I just shut up, but never forgot it.
Nothing like that has happened before or since.