Shadows of objects vanish in Ujjain village

Q.  Shadows of objects vanished in which Ujjain village due to a typical astronomical position of the Sun on 21st June 2016?
- Published on 22 Jun 16

a. Dongra
b. Dongla
c. Dongsa
d. Dongfa

ANSWER: Dongla
 
Shadows of objects vanished in Dongla village, Ujjain district for a minute on account of the typical astronomical position of Sun on 21st June- the longest day of the year
  • Sun was positioned on Tropic of Cancer on northern hemisphere around 12:28 pm
  • Position was exactly atop the Dongla village where the Tropic of Cancer has passed creating a phenomenon where object shadows vanish for a minute
  • This rare occurrence is seen once a year on solstice which is the longest day of the year
  • Monday (June 21 2016) was the longest day in the northern hemisphere of 13 hours 34 minutes and shortest night of 10 hours 26 minutes
  • Sun assumes the unique position as the earth is tilted 23.5 degrees
  • The entire movement of the Sun and shadow less period was studied using a Shanku Yantra or vertical gnomon
  • This is a traditional astronomical device installed by Sawai Raja Jaisingh of Jaipur in 1719 and with the help of the shadow of the gnomon, the angle of elevation and zenith distance of the sun can be determined.
  • At Dongla village, Tropic of Cancer and ancient Indian Time Meridien meet and on June 21 solstice, the shadow of the gnomon vanishes

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