I can see two way to solve the problem
1) use two dimentional list.
2) use two one dimentional list to store current row and previous row.
(that is what you are doing.)

in your case you use...

I would assign your date variable into a date type variable (I think it was something like datetime just look it up). so you will have a real date. then you can easiliy format your out put.

program should be like this
1) get sentence from user
2) check every latter if it is a vowel
3) if it is make it upper case.
you probably figured that out already. now to to thinks simpler first...

1) check firewall in your computer. this is not likely the case. but if you have a firewall set you have to open the port from your firewall too.
2) your router might not working correctly. That...