$ perl -MHTTP::Date -le " print for ~~localtime, ~~gmtime, str2time(q/20110905 142631/) "
Mon Sep  5 06:25:26 2011
Mon Sep  5 13:25:26 2011
1315257991

$ perl -MHTTP::Date -le " $f = str2time(q/20110905 142631/) ; print for ~~localtime $f, ~~gmtime $f"
Mon Sep  5 14:26:31 2011
Mon Sep  5 21:26:31 2011