The hack is literally trivial. Check once a month to see if UTC # ET. If not then create a file called Leap_Second once a month, check if this file exists, and

The hack is literally trivial. Check once a month to see if UTC # ET. If not then create a file called Leap_Second once a month, check if this file exists, and if so, then delete it, and add 1 to the value in a file called Leap_Seconds, and make a backup called 'LSSE' Leap seconds since Epoch. You are not expected to understand this. It keeps both systems in place. If you want, I could make it either a hash or a lookup table.