Q.1.
Long West, LHA = GHA – LONG
GHA = 150o 15’.4
LONG = 30o 38’.3W (-)
LHA = 119o 37’.1
Q.2.
Long East, LHA = GHA + LONG
GHA = 45o 23’.4
LONG = 70o 54’.5E (+)
LHA = 116o 17’.9
Q.3.
Long East, LHA = GHA + LONG (-360o ?)
GHA = 345o 15’.00
LONG = 65o 19’.67E. (+)
LHA = 410o 34’.67
360o 00’.00 (-)
50o 34’.67
Q.4.
Long West, LHA = GHA – LONG (+360o ?)
GHA = 15o 30’.0
LONG = –172o 25’.8W. (-)
LHA = -156o 55’.8
+360o 00’.0 (+)
203o 04’.2
Click here to return to exercise 4
A fuller explanation of this topic is given in the book ‘Astro Navigation Demystified’.
Useful Link: Local Hour Angle and Greenwich Angle Hour
Return to the blog: www.astronavigationdemystified.com
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