Lifespan of Starlight — Thalia Kalkipsakis

In 2084, three teenagers discover the secret to time travel. At first their jumps cover only a few seconds, but soon they master the technique and combat their fear of jumping into the unknown. It's dangerous. It's illegal. And it's utterly worth it for the full-body bliss of each return. As their ability to time jump grows into days and weeks, the group begins to push beyond their limits, with terrifying consequences. Could they travel as far as 10 years, to escape the authorities? They are desperate enough to find out. But before they jump they must be sure, because it only works in one direction. Once you trip forwards, there's no coming back.