Heroes VI acts as a prequel, occurring 400 years prior.

With Hurricane Joan occurring only 8 years prior, 10,724 people were evacuated before and during the hurricane to take refuge at special camps.

Changes to Superman's history include making him once again a single man and the deaths of Jonathan and Martha, which occurred years prior.

These events occurred prior (presumably some years) to the beginning of 100 Bullets.

John occurs prior in the 4th of Henry IV.

John occurs prior, about the 15th.

Richard occurs prior in the 17th and the 28th of Henry VI.

The group is unaware of the events that occurred a few weeks prior.

Mikuru is actually a time traveler, sent back to investigate a massive timequake that occurred three years prior, the cause of which is Haruhi.

Although various events occur the week prior, the actual street festival typically takes place on the weekend closest to June 10, the official Portugal Day.