You can split the timestamp up into year, month etc. and use the timelocal() subroutine of the Time::Local module (comes with Perl) to convert the timestamp to seconds since the epoch. Then add 120 to go forward two minutes and use localtime() to convert back to seconds, minutes etc.

Be sure to watch out for years counting from 1900, e.g. 2006 should be supplied to timelocal() as 106 and you'll get the same back from localtime(). Also January is 0, December is 11.

I hope this is of use.

Cheers,

JohnGG