Centralize date conversion logic, fix tz bug
Centralize date conversion logic, fix tz bug

MattClarke131/league,hndrewaall/league,massgo/league,hndrewaall/league,hndrewaall/league,MattClarke131/league,hwchen/league,hndrewaall/league,MattClarke131/league,hwchen/league,massgo/league,MattClarke131/league,hwchen/league,massgo/league,hwchen/league,massgo/league