Equestria operates on a clock, and it's ticking down to the next cycle. But not more than a few years of the last one were known of, until a scroll discovered how an immortal princess could be born, and revealed the workings of the clock.

Rainbow Dash needs money, but how to get it? (A 30 Minute Story)

A day in the life of Twilight Sparkle tells of Ponyville's insanity.