Changelog for python-dateutil15-1.5-4.fc21.noarch.rpm :
Sat Jun 7 14:00:00 2014 Fedora Release Engineering - 1.5-4
- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild

Sun Aug 4 14:00:00 2013 Fedora Release Engineering - 1.5-3
- Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild

Thu Feb 14 13:00:00 2013 Fedora Release Engineering - 1.5-2
- Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild

Wed Jul 13 14:00:00 2011 Rahul Sundaram - 1.5-1
- parallel installable newer version
- askbot indirectly requires this newer version via python-celery