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 1.4 days before perigee (on April 30, 1911, at 9:00 UTC), the Moon's apparent diameter was larger.

[5] Totality was visible from southeastern tip of Australia, Tonga, American Samoa and the Cook Islands.

Members of Stonyhurst College departed from Tilbury, England by ship on February 3 and arrived in Sydney on March 16.

On April 29, the eclipse day, the sky cleared before the first contact (beginning of the partial phase).

During the eclipse, there was almost no sound on the island except the chirping of crickets, because the government told the local people to keep quiet and not to light fires to avoid creating smoke and disturbing the observations.

The British in charge boarded the ship with the instruments leaving Sydney on June 10 and arriving in Tilbury on July 23.

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