Group fmonth(?P<fmonth>\w+.\d*) \w+a Unicode word character, repeated at least once
.any Unicode character (except for line terminators)
\d*a Unicode decimal digit, repeated any number of times
\s+a Unicode whitespace character, repeated at least once
\D+any character that is not a Unicode decimal digit, repeated at least once
\s+a Unicode whitespace character, repeated at least once
Group smonth(?P<smonth>\D+.\d+) \D+any character that is not a Unicode decimal digit, repeated at least once
.any Unicode character (except for line terminators)
\d+a Unicode decimal digit, repeated at least once
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string