How to Match Multiple Date Formats with Regex?

^(\d{1,2}/\d{1,2}/\d{4}|\d{4}-\d{1,2}-\d{1,2}|\d{1,2} \w+ \d{4})$

This regex pattern matches dates in three specified formats: MM/DD/YYYY, YYYY-MM-DD, and DD Month YYYY.

1. The pattern starts with ^ to indicate the beginning of the string.
2. It uses ( ) to group the three date formats together.
3. Each format is separated by | which acts as an OR operator.
4. The \d{1,2} matches one or two digits for day or month.
5. The \d{4} matches exactly four digits for the year.
6. The \w+ matches one or more word characters for the month name.

• Input with invalid dates like 13/01/2020 or 2020-02-30.
• Input with mixed formats in the same string.
• Input with leading zeros like 01/01/2020 or 2020-01-01.
• Input with extra spaces or punctuation.
• Input with abbreviated month names like 01 Jan 2020.