The total driving time is 27 minutes. Your trip begins in Spring, Texas. It ends in Houston, Texas. If you're planning a road trip, you might be interested in seeing the total driving distance from Spring, TX to Houston, TX. You can also calculate the cost to drive from Spring, TX to Houston, TX based on current local gas prices and an estimate of your car's best gas mileage.
For scientific and engineering purposes, the fundamental unit for the measurement of time (the second) must have a fixed definition, not one that gets updated every few years just to keep in step with the occurence of solar midday.
Two-Dimensional. A shape that only has two dimensions (such as width and height) and no thickness. Squares, Circles, Triangles, etc are two dimensional objects. Also known as 2D. See: Three-Dimensional.