date1 = 'December 29, 2005 Thursday'
date2 = 'February 1, 2015'
re.findall('[A-Za-z]+ [0-9]{1,2}, [0-9]{4}', date1)
['December 29, 2005']
re.findall('[A-Za-z]+ [0-9]{1,2}, [0-9]{4}', date2)
['February 1, 2015']
Список дат в тексте