What is the Date of First Use?

Two dates must be specified in a trademark application:

Date of First Use Anywhere: The “anywhere” refers to use in the U.S. or elsewhere. This is the date the goods were first sold or transported, or the services were first rendered under the mark. The use must also have been bona fide and in the ordinary course of trade. 

Date of First Use in Commerce: This is the date when the goods were first sold or transported, or the services were first rendered under the mark in interstate or international commerce.  The use of the mark must have been bona fide and in the ordinary course of trade.