Most hairdressers work up to 40 hours a week, usually between 9am to 5pm or 6pm. Most will work on Saturdays with a day off in the week. Some salons open late on one or two evenings.
The number of babies being born is astounding. The U.S. Census Bureau reports that 361,481 babies are born each day around the world. That works out to be 251 babies born worldwide per minute. Oh baby! Within the U.S., there were 3,952,841 babies born in 2012, according to the CDC. That's about 3 percent of the world's baby total (and 749 fewer births than in 2011).
There's just over 7 billion people in this world. No one can say how many exactly because every few minutes someone is born or someone dies so if I tell you a number now it might not be true 5 seconds later. You're never going to get the exact number, people die and are born every second.