Since the earth is spherical, the timings of the rise and setting
of the Sun differ from place to place and the chart of the time difference has
been evolved according to a standard. The Madras Railway Standard Time is in
practice everywhere and the time at every place is different from that of
Madras. The time of Sunrise whether earlier or later than Madras (now Chennai)
is recorded in the chart so that the fortunate movement could be determined
through adjustments with Madras time while drawing a horoscope.
Since the durations of both day and night are calculated at
30 gharis on the occasion when the
day and the night are equal the Sun rises at 4 O’clock and sets in the evening
at 6 O’clock. The time of the Sun rises and Sun sets changes with the variation in
duration of day and night.
At places that do not figure in the chart one
may calculate the time there, according to the time in a nearby city or district
as the difference of a minute or two does matter in respect of determining the
fortunate moment. Suppose someone wants to draw the lagan on the first day of Baisakh at 2:25 pm. By observing the daily chart of lagan, it is known that Kark lagan occurs on the first day of Baisakh up to 2:52 pm. If we have to watch this lagan at Ambala the difference of
Ambala is 42 minutes compared to Madras and 10 minutes compared to Lahore. It
means that the Sun rises at Ambala 42 minutes later than Madras and 10 minutes
earlier than Lahore. Therefore, when we add the time difference of 22 minutes
to 12:25 the Kark lagan will be fixed
at 12:47. The time in Ambala is the last part of Kark lagan. Since we need to watch lagan at 2:25 the next lagan
after Kark is singh which is recorded to exist up to 3:15. The difference between Ambala is 22 minutes later than Madras. When it will be added to 3:15 the singh lagan will be fixed at 3:37. This
is the time at Ambala. In Lahore, the singh
lagan will exist up to 3:47. Similarly, by including or excluding the time
difference one can fix the lagan.
Dr. A. Shanker
www.ShankerStudy.com
www.ShankerAdawal.com