Stand still…
Don't move…
What speed are you traveling at?
Duh… I'm not moving, so the answer would be Zero km/h…
Surprise, surprise… The Earth beneath you is spinning at a crazy speed around its North-South Axis.
And that means you are being dragged along at the same speed.
But at what speed are you travelling then?
If you were standing at the Equator you would be traveling as fast as you can.
Here the circumference of the Earth is 40075.16 km.
24 Hours later you would be back at this point, relative to the North-South Axis.
That means that you traveled at an amazing 1669.80 km/h.
If you were standing at either the North or the South Pole, your speed would effectively be Zero km/h, since that spot rotates once in 24 hours at a very, very low speed.
The listing coordinates is on latitude S 34'00'000
Therefore your speed at this spot would be ABCD.EF km/h.
Now go find the cache at S 34'00'00(B-A) E 018'25'(B+D)(B)(D)
To keep it easy you may ignore the speed of the Earth, as it travels around the Sun.
Only calculate the speed around the North-South Axis.
