http://www.newsweek.com/when-snapchat-egg-hunt-end-time-1401604

Snapchat added an Easter egg hunt game to the app for the holiday weekend and users were already spending plenty of time on the app Friday. The game was interactive and required users to walk around outside collecting virtual Easter eggs for points. 

Users simply had to collect eggs and therefore points so they could compete against their other friends who were also competing and collecting egg points. The game became available to users on Friday at 9 a.m. EDT and was set to be available to users until Sunday night at 9 p.m. PDT, or midnight on the East Coast, Snapchat told Newsweek.