"Day of the Week" is test 3 working?

Question

I have green on all the other tests except the third which is hidden. Has anyone done this one and know if it is working. Not asking for the hidden answer, just if it is working. Thank you for your time.
https://code.sololearn.com/chPAA55yI5FN/?ref=app

Just updated the code and still not passing test 3. Code Coach "Day of the Week" said that all the inputs should be in MM/DD/YYYY and Month Day, Year formats. All the same, the code can handle M/DD/YYYY, MM/D/YYYY, and M/D/YYYY. Going to add latter M(M)/D(D)/YY to see if it is the year that is the problem. Thank you guys for your time.

Updated again, not M(M)/D(D)/YY.

I think I found my problem, my whole system is based around using 01/01/2000. Any date before that is for some reason a few hundred days off, most likely my negative months are built incorectly. Will rebuild revers month section latter and try again.

Answer 1

Can you show your attempt with full description...?

Answer 2

Please mention the course name, the task number and the programming language.

Show your code please.

Answer 3

Please mention course name

Answer 4

Notify after any changes..Arctic
Your code not working when input for month is single digit.. Looks like that is the reason..