Time of LAN

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Because Noon isn't Noon every day

Find LAN and you can find your LAT at LAN, and you'll know that you are somewhere on the earth in that big friggin circle of a parallel.
 
Step 1: Open NA to correct page and find Meridian Passage in bottom right-hand corner of the right-hand pages. Note: Under the column of Mer Pass, find the approximate time of LAN, but correct using the minutes and seconds found under the midday (12h) Equation of Time; it'll make your estimate a few seconds more accurate.
 
Step 2: DR out and find your approximate position at time of Meridian Passage.
 
Step 3: From your new DR position, the time of Meridian Passage you found is in LMT. To find ZT, find your DLo (the distance between you and the central meridian of time zone), and convert that to time either using your calculator or the arc to time conversion table on the first yellow page in the back of the NA.
 
Step 4: If you are west of your central meridian, add your DLo minutes to time of Meridian Passage. If you are east of your central meridian, subtract your DLo minutes to time of Meridian Passage.

Long of Central Meridian
30°00'W
Your Long
- 31°00'W
=DLo to Central Meridian
= 1°00'(W)

DLo (in °)
1°00'(E)
Conversion
x 4 min/°
DLo in Time
= 4m

Meridian Passage
1206
Time of DLo
+ 4m (W)
Time of LAN
= 1210