Know what the Google logo hidden message is

Google has been in news lately after they have started the new program of inclusion of doodles in the design. It is said that the number of visitors who visit the search engine has been increased greatly once the doodle system has been started. Some of the users visit the page just with an intention to see the doodle. The increased curiosity is clearly evident from the numbers of searches that are going on at present, with an intention to find the meaning of the doodle.
The day September 7 is of greater importance to the search engine Google, as they have celebrated this day as their birthday for many years till 2005. Some of the people are still under a confusion and impression that September 7th is the birthday of Google. But, one needs to know the fact that the day has been changed to September 27th at present and this doodle is a mark of respect for the labor day.