"Take the last two digits of the year in which you were born - now add the age you will be this year, The results will be 111 for everyone in whole world."
You find that surprising? You could make a similar claim every year. Anyway it's not true. For anyone born in 2000 or later, the sum would be 11 not 111.
"This year, July has 5 Fridays, 5 Saturdays and 5 Sundays. This happens once every 823 years." That is wrong too. It is true everytime July 1st falls on Friday. Last time was 2005. Similar claim could be made for every month with 31 days. This is garbage for gullible people.
How about use your brain? That calculation is just another way of saying that your birth year plus your current age equals the current year. Duhhh! Of course it does. It is true for everyone every year. Nothing mystical about it.
As I said, it's garbage for gullible people who just parrot some rubbish they heard without even thinking what it means.