The calculation of a ship's position, either from astronomical observations, or from the record of the courses steered and distances sailed as shown by compass and log, in the latter case called dead reckoning (see under Dead); also used for dead reckoning in contradistinction to observation
Period of time dividing major eras in the history of Ayreth The First Reckoning starts with the Soulgift and the Godswar The Third Reckoning is defined by the Magewars The Forth Reckoning is marked by the Dark Sun Wars The current era of the companions is the Fifth Reckoning