Time Phrases - Dates and Ordinal Numbers

We use on with dates.

We use ordinal numbers for days of the month:

Activity	on	the	Ordinal Number
I met him	on	the	fourth.
I am going to London	on	the	eighth.

Cardinal Number	CardinalNumber	Ordinal Number	Ordinal Number
1	one	1st	first
2	two	2nd	second
3	three	3rd	third
4	four	4th	fourth
5	five	5th	fifth
6	six	6th	sixth
7	seven	7th	seventh
8	eight	8th	eighth
9	nine	9th	ninth
10	ten	10th	tenth
11	eleven	11th	eleventh
12	twelve	12th	twelfth
13	thirteen	13th	thirteenth
14	fourteen	14th	fourteenth
15	fifteen	15th	fifteenth
16	sixteen	16th	sixteenth
17	seventeen	17th	seventeenth
18	eighteen	18th	eighteenth
19	nineteen	19th	nineteenth
20	twenty	20th	twentieth
21	twenty-one	21st	twenty-first
22	twenty-two	22nd	twenty-second
23	twenty-three	23rd	twenty-third
24	twenty-four	24th	twenty-fourth
25	twenty-five	25th	twenty-fifth
26	twenty-six	26th	twenty-sixth
27	twenty-seven	27th	twenty-seventh
28	twenty-eight	28th	twenty-eightht
29	twenty-nine	29th	twenty-ninth
30	thirty	30th	thirtieth
31	thirty-one	31st	thirty-first
40	forty	40th	fortieth
50	fifty	50th	fiftieth
60	sixty	60th	sixtieth
70	seventy	70th	seventieth
80	eighty	80th	eightieth
90	ninety	90th	ninetieth
100	one hundred	100th	one hundredth
500	five hundred	500th	five hundredth
1,000	one thousand	1,000th	one thousandth
1,000,000	one million	1,000,000th	one millionth

There are 2 ways to say a full date with months and years:

Activity	on	the	Ordinal Number	of	Month	Year
I went to New York	on	the	first	of	January,	2010.
I am meeting her	on	the	second	of	December.

Activity	on	Month	the	Ordinal Number	Year
I saw it	on	January	the	first,	2010.
I'm playing	on	December	the	second.

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