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.
Report Abuse. 1  How Many Flights Per Day. 2  For the best answers, search on this site https://shorturl.im/awZV0. 3  It would be hard to calculate world figures but i found numbers for the US ranging from 27,319 to 28,537 average flights per day.  That's an interesting question I hope you'll get reasonable 1  answers. Not sure.
Let's think about how many flights there are per year. According to the International Air transport Association, there were 37.5 million flights in a year. This means that there are roughly 102,700 flights per day, and probably around 1000 private planes carrying people a day, so around 103,700 is my best guess.ccording to the International Air transport Association, there were 37.5 million flights in a year. This means that there are roughly 102,700 flights per day, and probably around 1000 private planes carrying people a day, so around 103,700 is my best guess.