In regular years, the 100th day of the year is the 10th of April. In leap years, it's the 9th of April.
April
The 9th of April was the 100th day of the year 2000.
April 10
The 100th day of the year 2012 is April 9th (because of a leap year).
9 April
10 April 2010.
on what day of the week will my 100th birthday fall?
April 10th is the 100th day of the year.
Monday 9 April 2012
The 100th day of the year is April 10, on a normal calendar year, April 9 on a leap year.
April 10 2010 was a Saturday. It also was the 100th day of the year.
10th April, 2022 ... It is the 100th Day of Calendar Year starting from 1st January.