Note 403 — THE THIRD VOYAGE NORTH-WARD TO THE KINGDOMES OF CATHAIA and China, in Anno 1596.
Reading edition
That is to say, till February 6th. But on that day, the sun’s declination being—15° 56′,4, it was 1° 41′ below the horizon in 75° 45′ N. lat., and therefore still invisible there. In lat. 76° it would have been as much as 1° 56′.
In 75° 45′ N. lat. the sun’s upper edge would have been properly first visible on February 9th, when the sun was in 10° 29′,2 of Aquarius, or longitude 319° 29′,2; its declination then being—15° 0′,5, with an assumed refraction of half a degree. ↑