Did you know that both Yahoo and Bing cannot tell the time in Tehran, Iran? A Bing Community thread points out the issue with Bing. Let me share with you searches for [time tehran] from Google, Yahoo, Bing, Ask and Wolfram – you will notice that both Bing and Yahoo are off.

Bing shows 3:55pm:

Yahoo also shows 3:55pm:

Google, Ask & Wolfram Alpha all show the correct time, as 4:55pm:

I am not sure why there is a difference between these search engines. Some cite that the difference comes from Iran Standard Time versus Iran Daylight Time, but Iran has one time right now.

Forum discussion at Bing Community.