Members of the public are set for an exciting weekend, with several opportunities to witness the awe-inspiring International Space Station (ISS) as it makes its way across the night sky. On March 22 and 23, 2025, the ISS will be visible during a series of passes that promise spectacular views, especially for those located in areas with minimal light pollution.
The first pass on Saturday, March 22, will commence at 18:41:02, appearing low over the western horizon at an altitude of about 10 degrees. Astronomers and casual observers alike will have a prime opportunity to see the ISS ascend rapidly, reaching a remarkable peak of 79 degrees above the southern horizon just a few minutes later at 18:44:23, before gracefully descending back to the eastern horizon by 18:47:45. With a brightness rating of -3.7 magnitude, this pass will surely catch the eye of night sky enthusiasts.
Notably, the second pass will occur shortly thereafter at 20:17:46, giving viewers another chance to catch a sight of the ISS as it ascends again from the western region. During this pass, the space station will reach a maximum height of 51 degrees above the south-southwestern horizon at 20:20:54, before quickly vanishing into the shadow of the Earth. Its brightness during this pass will be slightly less, at -3.3 magnitude, but still significant.
Observers are encouraged to make the most of these optimal viewing conditions, particularly for the first pass, which is being touted as one of the highest of the season. “To observe the ISS on Saturday, March 22, is a perfect opportunity to see the brightest object in the evening sky,” said a representative from the astronomy community.
The excitement doesn’t stop there. On Sunday, March 23, the ISS will make its final appearance of the weekend, beginning its pass at 19:29:34. This time, it will again be visible low on the western horizon at around 10 degrees, before reaching a fascinating maximum altitude of 63 degrees before disappearing south-east at approximately 19:34:38. With a brightness of -3.6 magnitude, Sunday’s viewing will also captivate many observers.
With such accessible viewing conditions, no advanced equipment is required. All that is needed is a clear sky and a watchful eye. “The ISS can easily be observed even in areas with significant light pollution, requiring no equipment – just look at the skies at the specified times,” encouraged an expert. Perfect viewing spots include open fields, parks, and any locations where wide views of the sky are available, particularly in the directions from where the ISS is set to appear.
Those who decide to witness this extraordinary occasion will not be disappointed. The ISS, the largest artificial object in orbit around the Earth, provides a unique connection to the world of space exploration. It represents international collaboration in scientific research and the continuous human presence in low Earth orbit, reminding observers that there is a larger universe beyond our daily lives.
As the weekend approaches, sky watchers should prepare for these stellar events, perhaps gathering friends or family to share in the experience. It's a fantastic opportunity to educate others about space, science, and the importance of ongoing exploration efforts. Whether interested observers are seasoned sky-gazers or complete beginners, these ISS passes provide a splendid reason to step outdoors and enjoy the wonders of the night sky.
In summary, this weekend's ISS sightings offer not only a visual delight but also an educational experience. From the excitement building around each upcoming pass to the joy of sharing the moment with others, it’s truly a captivating event for everyone involved. So, mark your calendars – March 22 and 23 will be dates worth remembering as the ISS lights up the sky.