Old School Friend Same date of birth

Some 40 years after I had left school (around 1998), I was on holiday in Bournemouth and whilst in the lounge there got into conversation with several couples. We were saying where our home towns were. One lady from a couple said that they now lived in Nottingham but used to live in Alrewas - a small village near Lichfield but didn't expect anyone would have heard of it. I remarked that I had gone to school in Lichfield with a girl who lived in Alrewas. I said her father had kept the postoffice there. She remarked that she had worked in the postoffice and the girl I had gone to school with had been her bridesmaid. I haddn't seen or heard anything about the girl since leaving school. Secondly, my husband worked for a large company and in the late 60s/70s there was apparently an article in The Times stating that you only had to meet 16 many people to find two with the same birthday - day and month of year. A man from another department came into my husband's office and said I am just starting a survey to see if this pans out. He asked my husband for his date of birth - 22.04.1944 and then turned to another man in the same office and asked him his date of birth - 22.04.1944 - not only the same day and month but also the same year. He was a bit dismayed as he said this completely spoilt his survey. My husband and his colleague were not related.