During the official launch of the iPad in January, Apple said that the iPad would go on sale worldwide at the end of March.
Mac Rumors is now reporting that it has heard that the official on sale date is Friday, March 26th at 6PM.
The report corroborates with a blog post from the Examiner which claims that the iPad will go on sale on March 26th and Apple store employees will begin training on March 10th. The post also reveals that advertising for the iPad will begin March 15th and early adopters will receive a "special gift".