What time will an app go live in iTunes when setting an Availability Date in the future?
The answer is quite simple. Assuming your app has been approved and is in the ‘Ready for Sale’ state, it will be published in each App Store territory at midnight local time.
For example, if you have chosen to publish your app in the Australian, UK and US App Stores and set an availability date of 1st June then your app will go live at 0.00 hrs local time on the morning of 1st June in each territory.
The time in London when your app will go live:
- Australia: 31st May 15.00 hrs
- United Kingdom: 1st June 00.00 hrs
- United States: 1st June 08.00 hrs
This means that your app will go live in some territories before it is available in the UK.
WebDiary.com 
Hi
Thanks for the information, but I still confused.I hope if you could help me out.
For example, I’m in China and I want to publish my app in the US App Store.After I uploaded my app to app store and I don’t know when it will be approved, what should I do now? Do I have to change the Availability Date to the US current date? Or just set it to Chinese current date?(Chinese date is +16 hrs than US date)
Thank you very much.
Assuming your app passes Apple’s review, it will be published shortly after midnight (local time) in each regional app store.
In your example, your app will be visible in the Chinese App Store 15 hours before it’s available in the US App Store and 7 hours before it’s available in the UK App Store.