[boost] milliseconds UTC from discrete year, month, day, hour, minute, second

Subject: [boost] milliseconds UTC from discrete year, month, day, hour, minute, second
From: Victor Yankee (victor.whiskey.yankee_at_[hidden])
Date: 2013-11-21 14:30:23

Hello,

Can someone should me how to calculate the milliseconds since jan 1, 1970
in UTC, given separate
variables holding the year, month,day,hour,minute and seconds?

Thanks,