Makar Sankranti is about nature, energy of the sun, harvest of new crop, and progress of mankind. It marks the end of Malmaas, an inauspicious month in the Hindu (Panchang) calendar, and the transition of the Sun to the zodiacal sign of Makar (Capricorn) to herald a change in season.
Today, the northern hemisphere is experiencing the shortest day of the year. The winter solstice marks the shortest daylight period, but it’s not the day of the latest sunrise or earliest sunset. In the mid-latitudes the earliest sunset occurs in early December, while the latest sunrise is not until early January.
The Jantar Mantar is an equinoctial sundial, consisting of a gigantic triangular gnomon with the hypotenuse parallel to the Earth’s axis. On either side of the gnomon is a quadrant of a circle, parallel to the plane of the equator. The instrument is intended to measure the time of day, correct to half a second and declination of the Sun and the other heavenly bodies.
It looks like a natural miracle. It is called as 22° halo. It is formed around the Sun or the Moon. It was a white circle around the moon. That breathtaking vision in the night sky is the result of ice crystals refracting the light of the moon. The halo rings the moon when high, thin cirrus clouds made up of millions of these crystals cover the sky.