On this day:

1659 Mughal Emperor Aurangzeb has his brother and competitor for the throne Dara Shukoh executed on religious grounds

1675 The foundation stone for the Royal Observatory, Greenwich is laid

1990 Magellan Space Probe is Inserted in Orbit Around Venus

Born on this day:

2005 Rameshbabu Praggnanandhaa, Indian chess prodigy, born in Chennai

Gone on this day:

1999 Padma Bhushan Acharya Baldev Upadhyaya, Eminent Sanskrit Scholar