^a Gk. ἑβδομάς, a period of seven, generally of seven days (i.e., a week) when not explicitly qualified, but not necessarily. If a seven-year period (i.e., a week of years), then seventy periods = 490 years (assuming 360-day years, then 490*360/365.24 = 483 solar years). (See Lv. 25:8 for an explicitly qualified period of seven years: ἑπτὰ ἑβδομάδες ἐτῶν, seven periods of seven years, i.e., forty-nine years.) While here unspecified whether of days or years, this is in contrast to Dn. 10:2 which makes an explicit qualification where days are intended: τρεῖς ἑβοδμάδας ἡμερῶν, three periods of seven days, i.e., three weeks. (Though, note, this qualification is not made in Dn. 10:2 OG.)