Why Sunrise and Sunset at the Same Ghat Shift by Over an Hour Through November

On November 1, sunrise in Varanasi arrives at roughly 6:11 AM. By November 30, it comes at 6:33 AM. Sunset slips from around 5:27 PM to 5:08 PM. That is a net loss of nearly 43 minutes of daylight across one calendar month, and every one of those minutes is visible from the same stone steps if you bother to watch.

Earth does not orbit the Sun standing straight. It leans at 23.5 degrees from vertical, and that tilt stays fixed in the same direction throughout the year. In November, the Northern Hemisphere is angled away from the Sun, and the angle is deepening with each passing day toward the December solstice on the 21st. The Sun appears lower in the southern sky at noon, rises from a point further south of due east, and sets further south of due west. At a ghat running roughly east-west along the Ganga, a devotee watching the aarti can see the sunset point walk southward along the far bank across the month, not dramatically, but measurably, by roughly 7 to 8 degrees of azimuth between the start and end of November.

The rate of change in daylight is not constant across the year. Near the solstices, June and December, the Sun seems to stall; the word solstice comes from the Latin sol sistere, meaning the Sun stands still. Near the equinoxes in March and September, daylight changes most rapidly. November sits between the autumn equinox and the winter solstice, which means it is still in the fast-moving zone, not yet at the stall. The daily loss of daylight in early November runs close to 2 minutes and 20 seconds per day in the latitude band that covers most of the Gangetic plain, around 25 to 27 degrees North. By late November it slows slightly toward the solstice brake, but it has not stopped. The cumulative effect over thirty days is stark enough that anyone using the ghat daily will feel it without needing a clock.

There is a second effect layered on top of the axis tilt, and it makes November stranger than most months. Earth's orbit is not a perfect circle, it is an ellipse, and in November Earth is accelerating slightly as it moves toward perihelion, its closest point to the Sun, which it reaches in early January. This acceleration means the Sun does not cross the meridian at exactly the same clock time each day. The gap between clock noon and solar noon is called the equation of time, and in November it shifts by roughly 16 minutes across the month. The practical consequence: sunset does not retreat symmetrically with sunrise. In November, sunset loses time faster in the first half of the month; sunrise loses it faster in the second half. The earliest sunset of the year in most Indian cities falls not on December 21 but somewhere between December 5 and 10, weeks before the solstice. The latest sunrise follows weeks after. A person watching only sunsets from a ghat in early December will think winter has already peaked. It has not.

A clock tells you when. A ghat tells you where. The azimuth shift, the sideways walk of the sunrise and sunset point along the horizon, is something a clock cannot capture at all. Ancient Indian astronomers tracked this carefully. The Jantar Mantar observatories built by Maharaja Jai Singh II in the early eighteenth century in Jaipur, Delhi, Varanasi, Ujjain and Mathura include instruments specifically designed to read solar declination, the Sun's angular distance from the celestial equator, and to track exactly the kind of horizon drift that November makes visible. The Samrat Yantra, a giant sundial whose gnomon points at the celestial pole, was accurate enough to read time to within two seconds. The Dakshina Bhitti Yantra, a wall instrument aligned to the meridian, measured the Sun's altitude at noon and therefore its declination on any given day. These were not decorative. They were working tools for a civilisation that needed to know when the Sun had moved far enough south to call a particular tithi, to set a festival, to begin a harvest. The ghat and the yantra were solving the same problem from different ends.

The shift across November is not an illusion produced by clouds or haze. It is the same geometry that tilts the light gold and long in October and turns it cold and brief by December. Earth's axis points where it has always pointed. The Sun does not move. The ghat just makes the whole mechanism legible.