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1.
The science of figuring out a qty of time left or time elapsed, when bored at an activity such as work.
I woke up at 4am and started doing clock math to figure out when to go to work so I could be home by 4pm.

Example 1 -- 30 mins to get ready + 1 hr drive + 8 hrs work + 1 hour break/lunch = 4pm...solve for how much longer can I sleep.

Example 2 -- it's 10:30am I got here at 6am 8 hr shift how much longer do I have to be here?
by 944 November 03, 2012