Python program to validate a date given month day and year in Hindi

Python program to validate date given day, month and year.
Python program to validate date given dd, mm and yyyy.

Example 1:
Input:
dd = 29 mm=2 yyyy=2020
Output:
Valid

Example 2:
Input:
dd = 31 mm=6 yyyy=2020
Output:
Invalid

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0:00 Intro & Problem description
0:46 Python code to validate date given day, month and year.
6:29 Testing the python code to validate date given day, month and year.

Question : Why are 1700, 1800 & 1900 not leap years but 2000 is?
Answer:
The number of days in a year are 365.2425, which is a little less than 365.25
Therefore, the correct number of days in 400 years = 365.2425*400 = 146097 days
Number of days with only the 4 year condition = 365.25*400 = 146100 [Number of days if the length of year was 365.25 and not 365.2425]
Difference = 3 (=146100-146097) days which we have overcompensated
Now, we have 400 years in which we have to remove 3 days: so 1700 not a leap year, 1800 not a leap year, 1900 not leap year but 2000 is a leap year
Total 3 days saved
And three 100th years between 400 year gap (ex: 1700,1800 & 1900 between 1600 and 2000) are chosen so that the calendar & seasons stay aligned to the earths natural orbit.