^(19|20)\d{2}-(0[1-9]|1[012])-…

^(19|20)\d{2}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[0-1])$

Go Haskell Java JavaScript .Net Perl PHP PostgreSQL Python Ruby Tcl XRegExp

https://www.regexplanet.com/share/index.html?share=yyyydthtunr