ODD ' numbers.
Once in a year
We get only one New year for every year. 1 is an Odd Number.
Twice in a month
We get 4 New weeks in every month. In that we have 1,3 are odd weeks.
Four times in a week
We get 7 New days in Every Week. In that 1,3,5,7 are the ODD Numbers.
Six times in a day
We get 12 New hours every day. In that 1,3,5,7,9,11 are the ODD Numbers.