Ordinals
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
Months
01 – January
02 – February
03 – March
04 – April
05 – May
06 – June
07 – July
08 – August
09 – September
10 – October
11 – November
12 – December