Dec. 19° 34' 48" S Table 26 = 2.8 Variation
Lat. 19° 16' 00" N For 1 min. 0 altitude.
Time Interval from Meridian Passage 15m 02s - 2.8" Variation for 1 minute
| (Table 27) | 2" = 7' 30" | |||
| .8 = 3 00 | ||||
| ————— | ||||
| 10' 30" + | ||||
| IE | - 1' 30" | 50° 51' 00" | ||
| HE | + 8 42 | + 7 12 | ||
| ———— | ————— | |||
| Corr. | + 7' 12" | 50° 58' 12" | ||
| + 10 30 | ||||
| ————— | ||||
| 51° 08' 42" | ||||
| - 90 00 00 | ||||
| ————— | ||||
| ZD | 38° 51' 18" N | |||
| Dec. | 19 34 48 S | |||
| ————— | ||||
| Lat. in | 19° 16' 30" N |
Assign for work in class room and Night Work, examples similar to the following:
1. At sea, July 11th, 1919. Latitude by D.R. 50° 01' 00" N. Longitude 40° 05' 16" W. Observed ex-meridian altitude
61° 45' 30" S. HE 15 ft. IE - 4' 10". CT (corrected) 2h 38m 00s. Required latitude in.
2. At sea, June 6th, 1919. Latitude by D. R. 49° 21' N, Longitude 18° 18' W. Observed ex-meridian altitude