Founding of Rome is celebrated on April 21st of each year.
The founding of Rome can be investigated through archaeology, but traditional stories handed down by the ancient Romans themselves explain the earliest history of their city in terms of legend and myth. The most familiar of these myths, and perhaps the most famous of all Roman myths, is the story of Romulus and Remus, the twins who were suckled by a she-wolf. This story had to be reconciled with a dual tradition, set earlier in time, that had the Trojan refugee Aeneas escaped to Italy and founded the line of Romans through his son Iulus, the namesake of the Julio-Claudian dynasty.
During the Roman Republic, several dates were given for the founding of the city between 753 BC and 728 BC. Finally, under the Roman Empire, the date suggested by Marcus Terentius Varro, 753 BC, was agreed upon, but in the Fasti Capitolini the year given was 752. Although the proposed years varied, all versions agreed that the city was founded on April 21, the day of the festival sacred to Pales, goddess of shepherds; in her honour, Rome celebrated the Par ilia (or Palilia). (The Roman a.u.c. calendar, however, begins with Varro’s dating of 753 BC.)