Changed timestamps to Dates rather than datetime
Changed timestamps to Dates rather than datetime

NYU-DevOps-Fall2017-PromotionsTeam/promotions,NYU-DevOps-Fall2017-PromotionsTeam/promotions,NYU-DevOps-Fall2017-PromotionsTeam/promotions,NYU-DevOps-Fall2017-PromotionsTeam/promotions