Se a minha mãe não se "enganou"...

...parece-me que é hoje...
Mas a verdadeira razão deste post é esta "brilhante" explicação que descobri:

Twenty-seven is also:

• The total number of letters in the Hebrew alphabet (22 regular letters and 5 final consonants)
• The current number of Amendments to the United States Constitution
• The code for international direct-dial phone calls to South Africa
• The designation (I-27) of a US interstate highway in Texas
• The designation (US 27) of a United States national highway from Fort Wayne, Indiana to Miami, Florida
• The name of a cigarette, Marlboro Blend No. 27
• Alternate name for The Hunt, a book by William Diehl
• The number of the French department Eure
• Abbé Faria's prisoner number in the book The Count of Monte Cristo
• The number of species Captain Jean-Luc Picard has made contact with in the series Star Trek: The Next Generation
• One of the anthropomorphic math symbols Lisa Simpson imagines talking to her in The Simpsons episode "Girls Just Want to Have Sums", which, instead of offering the expected pun-based aphorism, rather unhelpfully only says "twenty seven"
• In Steven King's novel "It", It returns every 27 years to Derry.
• 27 is the number of bones in the human hand