5
18 days as of 9/2/2010
One million
For 2011, according to the almanac section of Weatherunderground.com, there were 6 90 degree or better days in May, 24 in June, 27 in July, 29 (all but 2!) in August and 4 in September for a grand total of 90. There were 89 90 degree days at Peachtree-Dekalb airport.
To provide an accurate count of 90-degree days for the current year, I would need access to real-time weather data, which I do not have. Typically, 90-degree days are tracked by meteorological services and can vary significantly by location. You can check local weather reports or climate data websites for the most up-to-date information on 90-degree days in your area.
90
Two: the spring and autumn equinoxes.
The equator experiences a 90-degree sun angle at noon on the equinoxes, which occur twice a year—around March 21 and September 23. During these times, the sun is directly overhead. Therefore, the equator has a 90-degree noon sun angle for two days each year.
A 90 degree angle is a right angle
90 days is 12 weeks and 6 days.
5,400 minutes.
18
There are 129,600 minutes in 90 days.