You have some serious power over the flow of time. Through manipulating time, you can speed yourself up relative to everything else, enabling you to act far, far faster than any human could react, or turn it towards mundane uses such as aging a planted seed to see it rapidly mature into a tree, quickly aging fine wines, or freezing a volley of bullets in midair in order to evade it. From halting time completely to reversing its course, you are a master of time. Finally, since time is intertwined with space, after significant progression of your powers, you may find yourself being able to alter space itself by manipulating time in certain ways.
Your command and mastery over time and consequently space can be considered absolute. The only limit being reversing time which depends upon the laws of physics governing the specific universe in which you operate. Otherwise there is virtually no limits to your power.