On November 14, 1948, the Prince of Wales was born in Buckingham, sometime in the evening. Princess Elizabeth was just 22 & in labour for 30 hours during which time his father gallantly played squash with his private secretary in Buckingham’s indoor courts, until the baby’s head was crowned and then rushed to the spot. That was probably a good use of nervous energy as back then men were not allowed in the natarium.
At 10 PM a Royal guard announced “Yes it is a boy.” At 11:45 Queen Mary left the mother and child, jubilant. The actual time is unknown and it most probable that the guard made the announcement after the Princess awoke so she could enjoy the news.