1908

In the real world

 * The largest impact event in recorded history, a 10-to-15 megaton explosion, is caused by an air burst from an asteroid or comet near the Podkamennaya Tunguska River in Russia on June 30, 1908.

In the Kaiju Multiverse

 * Following the Tunguska event, a Rodan egg appears. (Godzilla: Kingdom of Monsters)