0.1 Nature of the Festival
0.1.1 Makar Sankranti is a pan-Indian harvest festival celebrated annually.
0.1.2 It marks the transition of the Sun into the zodiac sign Capricorn (Makara).

0.2 Astronomical Significance
0.2.1 Observed when the Sun begins its northward journey (Uttarayana).
0.2.2 It is one of the few Hindu festivals based on the solar calendar, hence falls on a fixed date (usually 14 January, occasionally 15 January).

0.3 Agricultural Importance
0.3.1 Celebrates the harvesting of winter crops, especially in agrarian regions.
0.3.2 Symbolizes gratitude to nature, farmers, and the Sun for agricultural abundance.

0.4 Religious & Cultural Aspects
0.4.1 Associated with Sun worship and taking holy dips in rivers like the Ganga.
0.4.2 Considered an auspicious time for charity, penance, and new beginnings.

0.5 Regional Variations (Names)
0.5.1 Known as Pongal in Tamil Nadu.
0.5.2 Called Magh Bihu in Assam.
0.5.3 Celebrated as Lohri in Punjab (eve of Sankranti).
0.5.4 Observed as Uttarayan in Gujarat (kite-flying festival).
0.5.5 Associated with Kanuma in parts of Andhra Pradesh and Telangana.

0.6 Social Significance
0.6.1 Promotes values of unity, sharing, and community bonding.
0.6.2 Traditional exchange of til-gud (sesame and jaggery) signifies harmony and goodwill.