You can see below grand bazaar opening times (Days and hours)
Grand Bazaar Opening Hours :
Weekdays from 08.30 – 19.00
Saturday from 08.30 – 19.00
Grand Bazaar Closed :
Sunday and religious holidays and bank holidays.
How to get to Grand Bazaar Easily ?
The Grand Bazaar is around 15 minutes walk from the Aya Sofya/Blue Mosque area. You can go Eminonu or Beyazit, and than walk 15 minutes.