Erm...
The gametracker at the bottom right of the page has HISTORICAL DATA written and there you can see your recent activity on the server you are looking at (es: murder, the one ur on right now)
There you can see how much more time you need. Also you can see your total time on the server by "All Time Stats".
http://prntscr.com/h9hp2i
Thats your current time in 30 days. You can check 7 days too or 24 hours.