Sanatan Dharm (Hinduism) is the oldest religion known to mankind. It predates recorded history. Thus, Sanatan Dharm has no start date. This makes perfect sense as there was no way to measure time as we do now with the calendar system. So Hinduism goes back all the way to very start when creation happened. The Vedas were first spoken through the mouth of God (ParBrahm). The Vedas contain virtues, beliefs, moral obligations, ethical laws, codes of behavior, traditions and righteous actions that sustain human life in peace and harmony are all aspects of Dharm.