Updates head.modified date/time (8-byte LONGDATETIME value)
Updates head.modified date/time (8-byte LONGDATETIME value)

longDateTime = Math.floor(new Date().getTime()/1000) + ((1970-1904) * 365 + Math.floor((1970-1904)/4)+1) * 24 * 60 * 60;

This calculates seconds since 1904-01-01 00:00:00
new Date().getTime() is UTC
Math.floor((1970-1904)/4)+1 = 17 leap years between 1904 and 1970

Lorp/samsa,Lorp/samsa