Photos of the Day: A Giant Flag and Gentoo Penguins

Istanbul, Turkey

Patriarch Bartholomew greets Greek Orthodox swimmers at the Golden Horn during the Epiphany celebration

Photograph: Ümit Bektaş/Reuters

Novosibirsk, Russia

A nativity scene outside Ascension Cathedral as the Russian Orthodox church celebrates Christmas

Photograph: Kirill Kukhmar/TASS

Harbin, China

Gentoo penguins in a zoo during an annual ice festival

Photograph: Tyrone Siu/Reuters