THINK ABOUTIT UFO|UAP ENCOUNTER REPORT

2003: Navi Mumbai UFO Sighting | Triangular Craft Case Archive

Cutting through a dark, near-empty shortcut on his way to evening classes on December 20, 2003, a witness in Navi Mumbai glanced up past a couple talking nearby and caught a bright light he first took for a plane. A second look changed his mind: a perfectly symmetrical triangular shape, a steady, non-blinking light burning at each of its three corners, hanging completely still and silent in the sky — stiller, he’d later say, than even a Sukhoi-30 MKI fighter jet could manage at that height. He watched it for over two minutes before he had to hurry off to class. When he checked the sky again afterward, from a different route home, it was gone.

Date: December 20, 2003

Sighting Time: Around 7:15 PM

Day/Night: Night

Location: Navi Mumbai, Maharashtra, India (a dark, sparsely traveled shortcut route)

Urban or Rural: Urban

Hynek Classification: NL (Nocturnal Light) — retained; the witness’s own altitude estimate (1,000–1,500+ feet) places the object beyond Hynek’s 500-foot CE-I threshold, despite the considerable structural detail described. See Researcher’s Notes.

Duration: Over 2 minutes

No. of Object(s): 1

Description of the Object(s): A triangular craft with a bright, non-blinking, steady light at each of its three corners; completely silent and stationary throughout the observation

Shape of Object(s): Triangular, described by the witness as having “perfect” 45-degree angles — a geometric impossibility for a three-sided shape (interior angles of any triangle must sum to 180 degrees); the witness likely intended to describe a symmetrical, equilateral-looking shape. See Researcher’s Notes.

Size of Object(s): Estimated at 750–900 meters per side — a figure derived from the object’s apparent (“apple-sized”) angular width combined with the witness’s assumed altitude of 1,000–1,500+ feet, not an independently measured size. See Researcher’s Notes.

Color of Object(s): Undocumented — corrected. The original field described the number and position of the object’s lights (three, one per corner), not their actual color, which is not specified anywhere in the source beyond “brightly lit”

Distance to Object(s): Undocumented independently of the height estimate; witness estimated the object at 55–60 degrees elevation from the horizon

Height & Speed: Estimated altitude of 1,000–1,500 feet or more; completely stationary throughout the sighting, with no speed applicable

Number of Witnesses: 1

Special Features/Characteristics: No blinking observed, distinguishing it from the witness’s initial assumption it was an aircraft; no sound was heard; object remained completely stationary throughout, a stability the witness explicitly compared to being beyond the capability of a Sukhoi-30 MKI fighter jet at similar altitude; witness had to leave for scheduled classes while the object was still visible, and did not see it again upon checking the sky via a different route afterward

Case Status: Unexplained

Source: Undocumented — appears to be a directly submitted first-person account; original submission venue not specified

Summary/Description: Around 7:15 PM on December 20, 2003, a witness walking a dark shortcut in Navi Mumbai spotted a large, silent, stationary triangular object with a bright, non-blinking light at each corner, estimated at 1,000–1,500 feet or more in altitude. He watched it for over two minutes before leaving for class; checking the sky again afterward via a different route, he saw nothing.

Related Cases: Undocumented — source does not reference other cases

Detailed Report

On the evening of December 20, 2003, the witness was taking a shortcut through a dark, sparsely traveled route in Navi Mumbai on his way to evening classes. Passing a couple talking nearby, he glanced skyward as he moved on and spotted a bright light, initially assuming it was an airplane. Something made him look again — and on a closer look, the light resolved into a triangular shape with a bright, steady point of light at each of its three corners.

He noted immediately that none of the three lights blinked, unlike the aircraft he was used to seeing, and that the object made no sound at all. Judging its angular size against something held at arm’s length — describing it as “apple-sized” from the ground — and estimating its altitude at somewhere between 1,000 and 1,500 feet or more, he calculated each side of the triangle at roughly 750 to 900 meters long, with the whole shape appearing at an elevation of about 55 to 60 degrees above the horizon. He described the triangle’s corners as “perfect” 45-degree angles, giving it a precisely symmetrical appearance.

What struck him most was how still it was. The object held its position completely, without so much as a wobble — a stability he found remarkable enough to compare, unfavorably, to a Sukhoi-30 MKI, a highly capable Indian Air Force fighter jet: in his words, even that aircraft couldn’t hold itself so steady at that height. He watched the object for over two minutes before he had to move on, running late for class, with the craft still hanging silently in place as he left. After his classes ended, he took a different route home and kept watching the sky out of habit, but saw nothing more. The object had vanished.

RESEARCHER’S NOTES

The Navi Mumbai Triangle — India 2003 and a Geometry That Doesn’t Add Up

A Geometric Impossibility: The witness describes the triangular craft as having “perfect” 45-degree angles at each corner. This is mathematically impossible for a three-sided shape, whose interior angles must sum to 180 degrees — three 45-degree angles sum to only 135. The witness likely intended to describe a symmetrical, equilateral-looking triangle, which would correspond to 60-degree angles at each corner, not 45. The original figure is preserved here rather than silently corrected, since the witness’s precise intended meaning can’t be confirmed.
A Size Estimate Built on an Assumption: The claimed size of 750–900 meters per side is not an independently measured figure; it is calculated entirely from the object’s apparent, “apple-sized” angular width combined with the witness’s own assumed altitude of 1,000–1,500 feet. If the actual altitude were significantly different from that assumption, the calculated size would change accordingly. This entry treats the size figure as a derived estimate contingent on the altitude assumption, not a directly measured value.
Classification Notes: NL is retained, since the witness’s own altitude estimate (1,000–1,500+ feet) places the object beyond Hynek’s 500-foot CE-I threshold, despite the considerable structural detail described (precise shape, non-blinking corner lights, complete stationarity).
Color Field Correction: The original “Color of Object(s)” field described the number and position of the object’s lights, not their actual color, which is not specified anywhere in the source beyond “brightly lit.” This entry marks Color as Undocumented accordingly.
A Notable Aviation Comparison: The witness’s comparison of the object’s stability to a Sukhoi Su-30MKI — a genuinely advanced, thrust-vectoring-equipped fighter jet capable of unusual low-speed stability — suggests some technical aviation familiarity on the witness’s part, and is offered here as a data point on the witness’s frame of reference rather than confirmation of any specific performance capability.
Evidentiary Weight: The account rests entirely on a single, uncorroborated witness with no photograph or independent confirmation; the numerical inconsistencies noted above suggest the specific figures should be read as rough impressions rather than precise measurements, without necessarily undermining the core account of a stationary, silent, non-blinking triangular light formation.

The Navi Mumbai triangle is a case of good instincts and shaky math: a witness who noticed exactly the right details — no blinking, no sound, no wobble — while reaching for numbers his own geometry couldn’t quite support. Neither problem cancels the other out. It remains filed as Unexplained, with its figures presented as estimates rather than measurements.