A total solar eclipse occurred at the Moon's ascending node of orbit on Sunday, September 21, 1941,[1][2][3][4][5][6] with a magnitude of 1.0379.

A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness.

Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide.

Occurring about 2.25 days before perigee (on September 23, 1941, at 10:40 UTC), the Moon's apparent diameter was larger.

[7] The path of totality crossed the Soviet Union (today's Russia, Kazakhstan and Kyrgyzstan), China, Taiwan, Okinawa Prefecture and South Seas Mandate (the parts now belonging to Northern Mariana and Marshall Islands) in Japan, and ended in the Pacific Ocean.

The Chinese Solar Eclipse Observation Committee sent two teams - one led by Zhang Yuzhe and Gao Lu to the Taiyue Temple in Lintao County, Gansu,[8][9] and the other to Chong'an County (now Wuyishan City), Fujian.

The foggy weather in Lintao suddenly cleared up during the eclipse, making the observation successful.

[12] Several universities in Japan made observations in Ishigaki Island in Okinawa, Pengjia Islet in Taiwan under Japanese rule, and Chinese sites including Dongyin Island in Fujian, Nanchang in Jiangxi, Heshengqiao [zh] in Xianning, Hubei, Yanzhou [zh] in Jiayu, Hubei, and Hankou (now in Wuhan).

It was originally planned to involve 28 agencies, but due to the outbreak of World War II, only 7 observation teams were formed.

Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee).