Satellites visible from Thoothukudi (8.7642°N, 78.1348°E) tonight, with the IST start time, direction, peak height and brightness of each pass. A pass is listed only when the satellite clears 10°, is sunlit, your sky is dark and it reaches about magnitude 4.5.
Thoothukudi, the old pearl-fishing port on the Gulf of Mannar, lies about 534 km south-west of Chennai. Its coast faces east over open sea, and ISRO's second spaceport, for small satellite launchers, is being built at Kulasekarapattinam in the same district.
The district is dry, with most rain arriving from October to December. The rest of the year brings long clear spells, best from January to March.
Pass times for Tirunelveli, Kanyakumari.
The ISS is the brightest at magnitude -3 to -4, followed by China's Tiangong station, large Earth-observation satellites, spent rocket bodies and Starlink trains in the days after a launch. GPS and NavIC satellites orbit too high to see with the naked eye.