In astrology place of birth is equally important as date and time of birth. This lesson tells you how the place of birth affects the calculations and how much precise we should be in specifying the place of birth - whether a street, a colony, a city or a country. Some important formulas to compute distance are described when longitudes and latitudes are known. The lesson also explains importance of time zone and time correction.
In astrology place of birth plays an important role. If it is day in India, it is night in America. So the effect of Sun is reversed. Similarly effect of other planets also change.
This change in effect is more prominent longitudinally and is comparitively much less latitudinally e.g. it remains day if we move South to North - Sri Lanka to Russia. But there is still a difference in sunrise marginally from one Latitude to other even if longitude remains the same.Let us understand what is longitude or latitude; how we measure it and how much distance has how much effect in calculation of horoscopes.
Latitude : These are imaginary lines, parallel to equator. The equator represents zero degree latitude. North pole is 90°N and South Pole is 90°S.
Longitude : These are imaginary vertical lines parallel to the prime meridian, which pass through Greenwich where the British Royal Observatory is located. The prime meridian is at 0° longitude and we count 180°E in East, to 180°W in West. 180°E and 180°W coincide and represent the same vertical line just opposite to prime meridian. Unlike parallel of latitude, all meridians are of equal length. Any place on earth can be uniquely assigned a longitude and latitude and any such coordinates define a single point on earth. Delhi has a longitude of 77°13'E and latitude of 28°39'N.
Since earth is spherical, every degree of longitude does not represent equal distances.
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