Hi ipenmymusings,
It doesn’t quite work that way. The prompts are scheduled in advance and each person writes on different prompts throughout the month.
Every month we do 5-6 open prompts on pre-scheduled dates where everyone can write on these prompts. We announce them on our Facebook page periodically. You may follow us on https://www.facebook.com/onepostdaily
Project 365 
how to find out prompt of the day?
Hi ipenmymusings,
It doesn’t quite work that way. The prompts are scheduled in advance and each person writes on different prompts throughout the month.
Every month we do 5-6 open prompts on pre-scheduled dates where everyone can write on these prompts. We announce them on our Facebook page periodically. You may follow us on https://www.facebook.com/onepostdaily
http://soumyamukherjee8.wordpress.com/2014/07/26/a-z-a-26-line-alphabetical-piece-in-rhyming-couplets/ todays guestpost
http://soumyamukherjee8.wordpress.com/2014/05/25/close-encounters-of-the-wild-kind-part-1/
http://soumyamukherjee8.wordpress.com/2014/05/27/close-encounters-of-the-wild-kind-part-2-concluded/