I have gone over the two moon problems (yes I know since there are only two and who really gives a crap), but I can’t figure out where I’m going wrong.

Page 34 Deck Officer Study Guide, Book 5 Navigation Problems

050259/NP02165

On 25 Feb, at 0622 ZT, you observe the upper limb of the Moon with a sextant altitude of 59 58.6’. Your DR psn is Lat 30 28.3’ S, Long 102 39.3’ E. Chronometer reads: 11h 21m 18s and is 48s slow. HOE: 59’, IE is 2.5’ on the arc. What is Zn and intercept of the sight using the AP?

Here is what I keep getting for my numbers:

LHA moon = GHA moon + Long = 282 32.3’ + 102 32.3 E = 24

Lat = 30 S

Dec = S 10 56.1

Ho = 60 00.4

Hc = 60 39.0

Zn = 305.4 (this is the only number I get right)

Can someone explain what I’m doing wrong with my Ho and Hc? Thank you