One of the more puzzling comments in the Book of Abraham comes from the explanation given in figure 1 of Facsimile 2, which speaks of “the measurement according to celestial time [of Kolob], which celestial time signifies one day to a cubit.” Latter-day Saint commentators on this passage have largely been at a loss to explain what this might mean. However, scientist Hollis R. Johnson proposes a straightforward scientific explanation that finds precedent in the ancient world.
From BYU Studies Quarterly, volume 61, number 4.