[One Year: A Century of Birthdays](http://lens.blogs.nytimes.com/2015/06/05/one-year-a-century-of-birthdays/?module=BlogPost-Title&version=Blog Main&contentCollection=Multimedia&action=Click&pgtype=Blogs&region=Body&_r=0#)

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For Ilvy Njiokiktjien, a stint as the Dutch national photographer turned into a never-ending party. Given the task in 2013 of exploring the theme of “Family,” she wondered about the moments that united extended clans. “I thought of times when you see your relatives: funerals and birthdays,” she said. “The latter seemed more fun, and appropriate.”