…y astronomers , and in software for easily calculating elapsed days between two events (e.g., food production date and expiration date ). [ 1 ] The Julian period is a chronological interval of 7980 years, derived from three multi-year cycles: the Indiction , Solar , and Lunar cyc…

…v1.0 entry is incorrect. 26775 is NAD27 / Iowa North. NAD27 / BLM 15N (feet) is 32075, see below. PCS_NAD27_BLM_16N_feet 26776 This GeoTIFF v1.0 entry is incorrect. 26776 is NAD27 / Iowa South. NAD27 / BLM 16N (feet) is 32076, see below. PCS_NAD27_BLM_17N_feet 26777 This GeoTIFF …