SOMETIME / SOMETIMES / SOME TIME

Sometime : at an undecided time in the future or past
     - Hey Nick, Why don't you come over and have dinner with my family sometime?

Sometimes : not always or not often
     - We usually played soccer at school, but sometimes we played tennis.

Some time : a period of time
     - You must give your wife some time to think about what she did wrong at the church today.

Writing the date.

Days of the month
1st
first
2nd
second
3rd
third
4th
fourth
5th
fifth
6th
sixth
7th
seventh
8th
eighth
9th
ninth
10th
tenth
11th
eleventh
12th
twelfth
13th
thirteenth
14th
fourteenth
15th
fifteenth
16th
sixteenth
17th
seventeenth
18th
eighteenth
19th
nineteenth
20th
twentieth
21st
twenty-first
22nd
twenty-second
23rd
twenty-third
24th
twenty-fourth
25th
twenty-fifth
26th
twenty-sixth
27th
twenty-seventh
28th
twenty-eighth
29th
twenty-ninth
30th
thirtieth
31st
thirty-first