Prepositions of time
https://www.englishclub.com/grammar/prepositions-at-in-on-time.php
13-thirteen 30-thirty 1000-thousand
14-fourteen 40-forty 2000- two thousand
15-fifteen 50-fifty
16-sixteen 60-sixty 61- sixty-one
17-seventeen 70-seventy 61 000- sixty-one thousand
18-eighteen 80-eighty
19-nineteen 90-ninty
20-twenty 100-hundred
25- twenty-fifth
1- First 74- seventy-fourth
2- Second
3- Third
4- fourth
5- Fifth
6- Sixth
7- Seventh
8- Eighth
9- Ninth
10- Tenth
21 December- On the twenty-first of December
21 December – It’s twenty-first of December , 21st December
Monday- Tuesday- Wednesday- Thursday-Friday- Saturday- Sunday
https://agendaweb.org/grammar/prepositions-time-exercises.html
The clock
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10:05 It’s five past ten
am10:10 – It’s ten past ten.
pm13:09- It’s nine past one.
17:14- It’s fourteen past five
10:15- It’s quarter past ten.
11:20- It’s twenty past eleven.
12:25- It’s twenty-five past twelve.
13:30- It’s half past one.
13:31-It’s twenty-nine to two.
12:35- It’s twenty-five to one.
11:40 – It’s twenty to twelve.
10:45 – It’s quarter to eleven.
8:50- It’s ten to nine.
7:57- It’s three to 8.
8:01- It’s one past eight.
8:00- It’s eight o’clock.
https://agendaweb.org/vocabulary/time-exercises.html