on Hitlers bithday
If you don't have a twin for twin day, you can consider dressing similarly with a friend or group of friends to create a "twin-like" look. Alternatively, you can embrace the uniqueness of not having a twin and showcase your individuality with a creative twist on the theme.
the 11th of September
you don't have to tell the twin anything, they are separate people, just date the one you like. Tell the one you like that you think her twin is cool and leave it at that.... don't worry what the other may think.
The date of birth is the date of birth. The day will not be changed just because they had a twin. There are twins with different birthdays.
2001 2001
9-11-01
9/11
Iraq did not knock down the Twin Towers
September 11th, somewhere around 3 and 4 GMT
the twin tower's was blown up on September 11 2001!
September 11, 2001
They crashed on September 11, 2001.