Moon Enters Waning Gibbous Phase as Clouds Threaten Karwa Chauth Sightings

Millions of observers across India turned their attention to the night sky on Thursday, October 29, awaiting a bright waning gibbous moon that marks the conclusion of the annual Karwa Chauth fast. The celebration, observed predominantly by married women praying for the health and longevity of their spouses, coincides with a prominent lunar phase visible worldwide. However, while celestial conditions presented a well-illuminated lunar disk, adverse weather patterns across northern parts of the country raised concerns that thick clouds and localized rain could obstruct ground-level views during the critical evening hours.

From an astronomical perspective, the moon entered its waning gibbous phase on Thursday, with approximately 86.6 to 87 percent of its visible surface illuminated, according to data from NASA. Because the moon takes roughly 29.5 days to complete its orbit around Earth, its appearance shifts continuously through eight distinct phases, moving from the new moon and waxing intervals toward the full moon and subsequent waning periods. Observers under clear skies can spot prominent lunar topography without equipment, including the Tycho Crater, the Copernicus Crater, and the Mare Imbrium basin. Those using binoculars can identify features such as the Posidonius Crater, the Mare Humorum, and the Grimaldi Basin, while telescopes reveal landmarks including the Rupes Altai, the Caucasus Mountains, and the historic Apollo 12 landing site. NASA trackers indicate that the next full moon will occur on November 24.

In India, the sighting of the fourth lunar day holds deep cultural and spiritual significance as Karwa Chauth, also known as Karak Chaturthi. The festival requires participants to observe a strict, day-long fast without food or water, known as Nirjala Vrat, which begins before dawn following a traditional pre-dawn meal called sargi. In Hindu tradition, the moon symbolizes peace, grace, and longevity. The fast officially concludes only after devotees worship celestial deities, catch a direct glimpse of the moon through a ceremonial sieve, offer water known as arghya, and receive their first drink of water from their husbands.

Because the moon rises progressively from east to west, scheduled appearance times varied considerably across the subcontinent. Astrological calculations projected that eastern cities such as Patna would witness moonrise shortly before 8:00 p.m., while western metropolitan areas like Mumbai were not expected to see the moon until approximately 9:00 p.m. In the National Capital Region, moonrise estimates clustered between 8:11 p.m. and 8:18 p.m., with Noida calculated at 8:16 p.m., Delhi at 8:17 p.m., and Gurugram at 8:18 p.m. Associated worship rituals, or puja muhurat, were slated for the early evening, with sources reporting the auspicious window spanning either 5:35 p.m. to 6:54 p.m. or 5:38 p.m. to 6:56 p.m.

The timing of this year's observance also sparked debate among calendar scholars over astrological alignments. Some panchang calculations indicated that the Chaturthi tithi began on the afternoon of October 28 and ended on the evening of October 29. Under traditional rules prioritizing moonrise during the active tithi, certain scholars argued the fast should have been observed on October 28, noting that the fifth lunar day, Panchami, would begin before moonrise on October 29. Nevertheless, widespread regional celebrations and community observances proceeded on Thursday.

Compounding the scheduling intricacies, unsettled autumn weather threatened viewing conditions in northern India. The India Meteorological Department reported that a cyclonic circulation over Haryana and adjacent Uttar Pradesh, combined with interacting western disturbances over northern Pakistan and Jammu, generated widespread cloud cover and intermittent rain across Delhi-NCR, Chandigarh, and surrounding states. Meteorologists noted that these atmospheric systems would also drive down maximum temperatures by 2 to 4 degrees Celsius over a two-day period, obscuring skies precisely when families gathered on rooftops and balconies.

With heavy overcast conditions threatening direct visual contact, devotees prepared traditional contingencies to conclude their nearly 14-hour fasts. Religious guidelines suggest that if rain or cloud cover completely blocks the sky, observers should consult family elders or local priests. In many household customs, worshippers may perform rituals and offer prayers facing east toward the moon's calculated position once the official rising time passes, allowing families to safely break the fast without waiting indefinitely for clear skies.