Happy Engineer's Day!! :-)
As we all know Today happens to be the birthday of Sir Mokshagundam Visvesvaraya and celebrated in his honour who was a notable Indian engineer, scholar, statesman and the Diwan of Mysore during 1912 to 1919.
I could quickly google few stories about him in Wiki & here.
Cross posted from Deepak Hegde's comment :
Indians have traditionally celebrated what can me described as 'Engineer's Day'? The day is dedicated to Lord Vishwakarma ( http://en.wikipedia.org/wiki/Vishvakarman ) who was the architect/engineer of the God's. This day is specially auspicious for all craftsmen and engineering companies who worship their tools on this day.