Time Travel is a highly advanced chronokinetic method for transporting someone either back or forward in time. It is basically the ability/capacity to move and travel forward in through time and back, visit past and future times, or only backward in time and back. However, most times one can travel forward or back in time at will, control how far in time they travel and use this ability. Angels can achieve it, and according to Oracle, for most angels, it's not easy to perform, but for Archangels and himself, it's incredibly simple to very easy. Angels who have been disconnected from Heaven have a very difficult time doing it, and it can be quite damaging to the de-powered angel.
The Primordial Beings are also capable of freely and easily traveling through any point of time except The Primordial times when there were only God and before the First War in Heaven. Whenever a Primordial Being travels through time, they have a unique method much more diffrent and apparently powerfully, instead of going there simply, they wrap themselves with Time Portals. While God and Oberon has a blue color, Death has a black one and Eve has a pink one.