通过正则表达式获取时间

Question

i have this kind of values from a scraped page and i want to get it by regex:

4:00pm
16th-17th
1:30am

i have this expression to deal with the time and it's working fine:

([1-9]|1[012]):[0-5][0-9](am|pm)

is there a way to have a single regex where i can also include the matching for 16th-17th

Answer 1

(([1-9]|1[012]):[0-5][0-9](am|pm))|(\d{1,2}(st|nd|rd|th)-\d{1,2}(st|nd|rd|th))