A cycle is counted from the first day of 1 period to the first day of the next period. The average menstrual cycle is 28 days long. Cycles can range anywhere from 21 to 35 days in adults and from 21 to 45 days in young teens.
Confidence votes 53. 28,537 is the number of commercial flights per day, according to the National Air Traffic Controllers Association. Shivam Gosai.
Somewhere in the world a Boeing jet is taking off or landing every two seconds â 24 hours a day, seven days a week. Boeing airplanes â 7 series and DC/MD models â have made more than 300 million safe, accident-free flights over the past four decades, including approximately 41,000 safe flights per day, every day, during 1998.