Don - i need some help with the math part.
I have sailed from Pearl Harbor (docked) towords west for a patrol in the East China Sea.
I have crossed the dateline and are aproximately at 162° E going 9 kts on course 270°true.
Polaris was fixed at 08:09:33 to 27°45' Setting me at aprox 28°N
Sun Rise occured at 08:41:33 (RedLight off)
Almanac shows expected SunRise on the date at 28°N (extrapolated) to 06:27:00
Now.....
Im at Time zone L and calculating my BaseTime SunRise as below:
BaseTime.......GMT......Local Lima Time
08:41:45 ~ 19:41:45 ~ 06:41:45
difference in SunRise
.06:41:45
-06:27:00
------------
......14m45s converted to arc
..3°30' (The minutes converted)
+0°11'15'' (The seconds converted)
-----------
3°41'15''
that i deduct from the center of timezone Lima (165° E) getting a Longitude of
161°18'45'' E
Now CTRL+LMouse says 162°10'45'' E some 56nm from the calculated SR longitude
Arc difference is 0°52'0'' - nearly 4 minutes.
All the time im getting these 4 minutes of difference......!!!! WTF is that. Im suspecting that PEARL HARBOR TIME is offset somehow. PEARL is located at 157°57'30'' W And i wonder if that has anything to do with the spawning time..
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