 With more practical tips and useful advice, this is the Old Farmers' Almanac Radio Report for Saturday, July 20th, the 202nd day of the year. Musician Carlos Santana celebrates his 77th birthday, and the first International Special Olympics were held on this day in 1968. Buying a simple bottle of white vinegar has become a little more complicated in recent years. Classic white vinegar with 5% acidity is good for both cooking and cleaning. So-called cleaning vinegar has 6% acidity. If marked as such, you can use it for cooking.