Timkat is the Ethiopian Orthodox celebration of Epiphany. It is celebrated on January 19 (or 20 on Leap Year), corresponding to the 10th day of Terr following the Ethiopian calendar. Timket celebrates the Baptism of Jesus in the Jordan River.
See the rest of the pictures here: http://www.huffingtonpost.com/2012/01/19/timkat-2012-ethiopia-photos_n_1212818.html?&ncid=edlinkusaolp00000008#s619205&title=Timkat