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WORKEDEXAMPLE - BEGINNINGOFDAYLIGHT
Enter at 15August and follow downwarduntil reaching latitude41 32.7. (41
will do) then straight across to read the LocalMeanTime (LMT) = 0629
Technically 15 06 29 (date added).
On theArc to Time table findLongitude 147=9 hours 48minutes.
Add the increment corresponding to 13’ (roundingup) =0’ 52’ = 0948+01
01 (roundingup) = 09 49.
Subtract theArc to Time from the LMT to give theBeginning of Daylight in
UTC= (15) 06 29 - 09 49= (14) 20 40on the14th.
Location: Launceston
Date: 15thAugust
Lat/Long: S4132.7E14712.9
15 06 29
- 09 49
= 14 20 40
daylight anddarkness
2 – preparat i on
BEGINNINGOFDAYLIGHT (AIPGEN 2.7)