Eclipses & Celestial Junctions
The celestial physics of cosmic alignments: Solar and lunar eclipses, Sankranti transits, solstices, equinoxes, and critical transitional days.
Grahanam Explained: The Astronomy of Solar & Lunar Eclipses
Why eclipses happen only at the lunar nodes (Rahu & Ketu), how syzygy works, and the truth behind fasting windows.
Sankranti Explained: Solar Ingress into the 12 Zodiac Signs
The mechanics of the Sun entering a new Rasi, the calculation of Punya Kalam, and the significance of Makara Sankranti.
Uttarayana & Dakshinayana: The Sun's North-South Journey
The astronomical physics of Earth's 23.44° axial tilt, seasonal solstices, equinoxes, and the Deva-Asura day-night cycle.
Kari Naal & Adverse Solar Days: The Physics of Critical Transit Points
Why Tamil calendars mark specific solar days as Kari Naal, how Earth-Sun radiation geometry creates critical inflection days, and practical guidelines.
Your City’s Panchangam, Every Day
Many printed calendars are computed for one town. Nava Panchangam computes sunrise, sunset and the windows that depend on them, such as Rahu Kalam, for your city, with a choice of Vakya or Drik; a tithi’s ending instant is the same everywhere.
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