General Navigation - Time

9 important questions on General Navigation - Time

Apparent solar day

The interval between two successive transits of the apparent sun over a particular meridian. Apparent solar day > sidereal day

Greatest difference between Mean Solar Day en Apparent Solar Day

Between February en November

Fllight in Westerly direction over IDL

Increase date by 1 or lose one day
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Flight in Easterly direction over IDL

Subtract date by 1 or gain one day

Keplers first law

Orbit of each planet is an elipse with the sun at one of the foci

Keplers second law

The line joining joining the planet to the sun known as the radius vector sweeps out equal areas in equal time

Hoek tussen orbital plane en polar axis aarde

23,5 graden
This causes seasons and variations in daylight over the year

1 hour civil day

= 15 degrees of rotation

Three types of twilight

1. Civil twilight
2. Nautical twilight
3. Astronomical twilight

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