To calculate how many hours and minutes does an activity take
http://www.timeanddate.com/date/timeduration.html?m1=&d1=&y1=&m2=&d2=&y2=
115/433
some Unix notes
To calculate how many hours and minutes does an activity take
http://www.timeanddate.com/date/timeduration.html?m1=&d1=&y1=&m2=&d2=&y2=
115/433