A rare and unique phenomenon known as “solar horns” is set to appear during the upcoming partial solar eclipse on March 29, 2025. For North Americans in the right location at the right time, witnessing this spectacle will be a chance to see the cusps of an eclipsed crescent sun appearing as two distinct points above the horizon during sunrise.
To maximize their chances of seeing “solar horns,” observers in southeastern Quebec and southwest New Brunswick in Canada, and northern Maine in the US must choose locations with unobstructed views of the eastern horizon. Coastal areas and elevated terrain are ideal spots, while a low horizon on land can also work if observed from high up.
Six specific locations have been identified as optimal viewing points for “solar horns,” including Forestville, Quebec; Saint Andrews, New Brunswick; Quoddy Head State Park, Maine; South Lubec Flats, Maine; Campobello Island, New Brunswick; and Presque Isle, Maine. Each of these locations will offer a unique perspective on the rare phenomenon.
For those unable to reach these specific locations, an eclipsed crescent sunrise can still be observed from many other areas with ocean horizons, including along the US coast from Maine’s border with Canada to Cape Cod in Massachusetts. However, it is essential to remember that never looking directly at the sun without proper eye protection and using regular sunglasses can cause damage to your eyes.
The partial solar eclipse on March 29, 2025 will also offer a chance to spot sunspots, which may be visible during the event.
Source: https://www.space.com/where-to-see-rare-solar-horns-partial-solar-eclipse-march-2025