Makar Sankranti Is Not the December Solstice

Around 21 December the Sun’s declination turns and the days start to lengthen. That is the tropical solstice. Around 14 or 15 January, Surya enters sidereal Makara. That is Makar Sankranti, the festival of til and gur and, in the south, Pongal. They were the same sky thousands of years ago. Precession pulled them apart. The gap is ayanamsa, now a little over 24 degrees, which is why the sidereal ingress sits in mid-January.

Calling the pandit late is a category error. He is not marking the solstice. He is marking a rashi ingress in the zodiac Jyotish uses for rashis, dashas and gochar. A Western solar-return chart uses the other zodiac. Both can be calculated. They are not interchangeable labels for one festival.

Uttarayan, said carefully

People say Uttarayan starts at Sankranti. In the tropical sense the Sun’s northward journey began at the solstice. In the festival sense the community’s solar new chapter is the sidereal ingress. Say which one you mean. The 2027 date is Makar Sankranti 2027. Why panchangs differ by a day is ayanamsa.

Questions people keep asking

Is 14 January astronomically special?

It is the sidereal Capricorn ingress of the Sun. The solstice, a different event, is in December.

Which one does Jyotish use?

The sidereal ingress. Rashis in this tradition are Lahiri, not tropical.