Know about Culture & prayer times
As the most religious Muslim country in the world, Saudi Arabia observes prayer time five times a day, from sun-up to sundown. It’s helpful for visitors to download an athan app on their phones, as prayer times differ slightly from day to day. (They move up progressively a minute or two every day). While it’s handy to know when prayer times are scheduled, it’s not vital, as locals will tip you off with subtle cues – and obvious mannerisms!
What to anticipate during prayer times:
Most shops and restaurants close during prayer time, and customers are asked to leave. There are, however, exceptions. Customers eating inside a restaurant, for example, will be allowed to finish their meals, but if they leave before prayer time is over, they may be asked to exit through the back door. During prayer times, supermarkets are also a popular place to become "trapped." Customers who arrive inside before prayer time may stay and shop until prayer time is over. Prayer sessions last approximately 30 minutes. A few malls and shops are changing traditions and are staying open during prayer times, but visitors will find that most businesses still observe the local custom of closing.