reckoning
131system of reckoning time — index calendar (record of yearly periods) Burton s Legal Thesaurus. William C. Burton. 2006 …
132dead reckoning — n [U] calculating the position of a ship or aircraft without using the sun, moon, or stars …
131system of reckoning time — index calendar (record of yearly periods) Burton s Legal Thesaurus. William C. Burton. 2006 …
132dead reckoning — n [U] calculating the position of a ship or aircraft without using the sun, moon, or stars …