Where Are The Cicacicada 2024 Timeline. That’s because 2024 will see two separate batches of periodical cicadas emerge en masse, spread across much of the eastern half of the u.s. For the first time in 221 years, this spring will see billions, if not trillions, of cicadas.

For the first time in 221 years, this spring will see billions, if not trillions, of cicadas. A periodical cicada that has just shed its outer skeleton.