02:20, mirror hour

In 02:20, the two of the hour becomes the twenty of the minutes: the hour's digits, read backward, give the minute's digits. A reversed mirror hour in the early morning with a symmetry that only shows up when all four digits are on screen at once.

Four again. Four is the number of things that hold, and holding is only ever visible whole. Split 02:20 and the symmetry disappears: two on its own is just two, twenty on its own is just twenty. The pattern lives in the four digits together, the way a bridge is only sound end to end.