1178

1178 was a common year.

Millennium:	2nd millennium
Centuries:	11th century – 12th century – 13th century
Decades:	1140s  1150s  1160s  – 1170s –  1180s  1190s  1200s
Years:	1175 1176 1177 – 1178 – 1179 1180 1181

Events

• June 18 – Five Canterbury monks see what was possibly the Giordano Bruno crater being formed
• The Sung Document written detailing the discovery of "Mu-Lan-Pi" (suggested by some to be California) by Muslim sailors
• The Chronicle of Gervase of Canterbury written
• The Leaning Tower of Pisa begins to lean as the third level is completed