Epochs

This diagram illustrates where we sit in the grand scheme of things. Keep in mind a Mahamanvantara is something like 311,040,000,000,000 years.

"Creation unfolds as a series of epochs. For each epoch there is a day and a night .

During your life, you experience day and night. Similarly, from a higher point of view, your entire life is one day: death is the entrance into night. After night passes, a new day arrives: a new existence. The same is true of the worlds. And the scalable view also applies: for a planet has its days and night, and its lives...

Related to this humanity, there are have been many days and nights. We are now in the middle of a Great Cosmic Day (Sanskrit: Mahamanvantara). We are in the fourth day, or fourth manvantara (period of time) or epoch. There are seven cycles or rounds within each day.

But within this fourth round, there are smaller measurements to be made. For this current humanity is the fifth Root Race to exist on this Earth. There have been other races, but only traces of them remain. Traces on Easter Island, in Egypt, in Mexico..."
(From GnosticTeachings.org)