Standard int'l to int'l @ MXP is 1:00. There are some exceptions in the table.
That said, you may want "live advice" from someone experienced with this. (Just for an example, ORD, until a year or two ago had a minimum UA to UA time of :29, which is something you'd never want to do to yourself).
[This message has been edited by Eastbay1K (edited 02-07-2003).]