Facebook App Notifications at certain time -

i have few facebook apps working need 1 of them create notification users using on days @ time. how do this?

example: every tuesday @ 7:00 a.m. push notification @ user's time zone. means should post @ 7:00 a.m. @ user's 7:00 a.m. not developers time zone way applies users @ correct time. when user clicks on notification, takes apps.facebook.com/myapp

(fyi, push notifications referring user being notified via globe icon.)

how can 1 working this? there sample code this? have read through facebook app api not mention how post notifications @ times linking api not much, hence question.

also, need additional permissions app other default permissions when app first created?

i don't think there way push facebook notification @ specified time. however, if storing information user internally, can use /me?fields=timezone offset , every hour fire off notification each user correct offset.