I can remember when I was little (late 80s, early 90s, I guess) my grandparents had several tapes of things I’d watch when I went over to stay. There was one particular cartoon (may have been anime) that I recall featured dragons in some way. The best identifier is the climax;
The villain believes he controls the sun, but the hero reminds him that the sun in the sky is eight minutes behind where it actually is.
There were dragons in some capacity, and I seem to recall a scene with dice falling, and that’s about it. I seem to recall I liked it (though we only had the last half) and I’d like to know what it was I was watching. Does the brief description help anyone?