libtime-local-perl 1.2000-1 (i386 binary) in ubuntu quantal

 Time::Local provides functions that are the inverse of built-in perl functions
 localtime() and gmtime(). They accept a date as a six-element array, and return
 the corresponding time(2) value in seconds since the system epoch (Midnight,
 January 1, 1970 GMT on Unix, for example). This value can be positive or
 negative, though POSIX only requires support for positive values, so dates
 before the system's epoch may not work on all operating systems.