Both Sides of Time has 36 pages.
A rim typically contains 500 sheets of paper, which equals 1000 pages when counting both sides.
144 pages in Taking Sides by Gary Soto
And Both Were Young has 240 pages.
There Will Be Time has 181 pages.
Seven Out of Time has 240 pages.
Masters of Time has 227 pages.
Exiles of Time has 183 pages.
Sister Time has 439 pages.
Angel Time has 288 pages.
Dragon's Time has 321 pages.
An Acceptable Time has 343 pages.
An Experiment with Time has 208 pages.