Today is August 31^{st} and we are going to calculate the days that there between 12^{th} of June 1829 to date.

I have used timeanddate.com calculator here

And this is their answer:

Result: 69,843 days

It is 69,843 days from the start date to the end date, end date included.

Or 191 years, 2 months, 20 days including the end date.

Or 2294 months, 20 days including the end date.

They don’t explain to us how they reached to the answer but let us see ourself.

We shall first find leap years since 1829. 1829 itself is not a leap year the next leap year is 1932.

Between 1832 to 2016 are 47 leap years. That means an extra day in each year compared to the normal years.

How many full years are there between 1829 to 2020. There are 190 full years obviously excluding 1829 and 2020 because they are not full year in this calculation.

So 190 years * 365 days =69350 days

Add the 47 days of each leap year in that period.

69350+47=69397

From Jan 1st 1830 to Dec 31^{st} 2019 is 190 years (leap+normal) and that period has 69397 days.

Now add the remaining days of year 1829 and to date 2020.

Between 12^{th} June 1829 end of that year has 203 days.

Between 1^{st} Jan 2020 to 31st August 2020 (today) is 244 days.