7 dated entries naming Krakatoa, drawn from 6 separate years between 416 CE and 1930 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.
416Reports of the eruption of Krakatoa are recorded in a Javanese historical chronicle called the Book of Kings.source
6th century
535Reports of the eruption of Krakatoa (Java), which possibly led to several years of climate change (see Extreme weather events of 535–536), are recorded in the Javanese Book of Kings.source
17th century
1680May – The volcano Krakatoa erupts, probably on a relatively small scale.source
19th century
1883August 26–27 – 1883 eruption of Krakatoa: The volcanic island of Krakatoa erupts at 10:02 am (local time); 163 villages are destroyed, 36,417 killed by tsunami.source
20th century
1927December 29 – Eruption of the Perboewatan and Danan undersea volcanoes near Krakatoa, create the foundation for Anak Krakatau Island.source
1927June – The volcanic island of Anak Krakatau begins to form in the Sunda Strait of Indonesia.source
1930August – The volcanic island of Anak Krakatau begins to form permanently in the Sunda Strait.source