As for why this day has been picked, well it seems children have inadvertently become the ones to blame for in first two days back at school after their summer break they will be picking up a host of germs and infections that will be passed on to parents.
These will further be passed on as adults catch public transport to get to work - leaving millions coughing, sniffing and sneezing.
The finding of the study has been based on a study conducted by the chemist chain, Lloydspharmacy.
"Children at nursery school and in the first few weeks of normal school are often exposed to a wide range of viral and bacterial infections," the Daily Mail quoted Lloydspharmacy head of medicines Chris Frost, as saying.
"This almost certainly has a beneficial long-term effect on their immune systems which begin working efficiently at an early age and so a long-lasting immunity to colds can be built up. "When kids first go back into the fray of the classroom, germs spread like wildfire," he added.
Keeping the day in mind, doctors in the country are offering tips to help deal with the prospect of September Sick-th.
Using tissues and not handkerchiefs to wipe runny noses
Disposing of each tissue immediately after use
Teaching kids to cover their faces when coughing or sneezing
Teaching kids to qash their hands after every playtime and before meals
Making sure that kids drink plenty of water
Telling parents as soon as they get a sore throat because it can help to treat it early.