the thirty first
The correct form is "31st," which indicates the ordinal number for thirty-first. The "st" suffix is used for numbers ending in 1, but not for numbers ending in 11, 12, or 13, which use "nd," "rd," and "th," respectively. Therefore, "31st" is the appropriate way to write it.
Thirty-first.
both are ok I think is 'write it correctly'.
she just turned 16, her birthday is in december. If i remember correctly its either the 30th or the 31st.
You've spelled it correctly.
'A date' or 'A time'
Heute which means TODAY
Ll.b.
by my hands
ACHDB
august 31st
august 31st