Shanghai to Witness Rare 'Red Moon' on Lantern Festival

Shanghai skygazers are in for a rare treat on the upcoming Lantern Festival as a total lunar eclipse – often called a "Red Moon" – will illuminate the night sky, marking a special coincidence that won't happen again for another 46 years.

According to the Purple Mountain Observatory of the Chinese Academy of Sciences, the eclipse will begin on the evening of March 3. Unlike many astronomical events that require staying up late, this spectacle will occur during prime evening hours, allowing families to enjoy the view while celebrating the festival.

"This is a rare coincidence of astronomical calendar and celestial movement," said Shi Wei, an associate researcher at the Shanghai Astronomy Museum, reported Wenhui Daily today. "The last time a total lunar eclipse fell on the Lantern Festival was March 4, 2007, and the next one won't be until March 4, 2072," Shi said.

The total eclipse phase, where the moon is completely shadowed by the Earth and takes on a coppery red hue, is expected to last from 7:04pm to 8:03pm, a duration of about 58 minutes.

Shi noted that Shanghai is ideally positioned to view the entire process. The moon will rise from the eastern horizon at 5:49pm already in a partial eclipse phase – a phenomenon known as a "rising eclipse."

"The timing is incredibly friendly," Shi added. "It coincides perfectly with the time for family reunions and lantern viewing."

The "Red Moon" effect is caused by the Earth's atmosphere scattering sunlight. While blue light is scattered away, longer-wavelength red light passes through and is refracted onto the moon's surface, giving it a distinctive reddish glow.