A series of “flash mobs” for Republican presidential nominee Donald Trump will take place throughout Michigan August 30.

Trump supporters will gather at 13 different locations across Michigan on Tuesday Aug. 30 from 4:00-5:30 p.m. to wave signs, flags, and other Trump campaign merchandise around to those who pass by.

The events are hosted by the grassroots group Michigan Conservative Coalition, a group committed to the principles of the founding fathers and the Republican Party platform.

According to the group’s founder, Rosanne Ponkowski, the events are a fun way for volunteers to gather in support of the nominee. She also said the events are growing in number.

“Each location will have a local feel unique to its community, but each site will show their support to elect Donald J. Trump during the same 4 to 5:30 p.m. time window,” said Ponkowski in a statement. “Grassroots enthusiasm for the Trump campaign is driving even more flash mob sites.”

The full lineup of events is listed on Michigan Conservative Coalition’s Facebook event page.

Pro-Trump flash mobs have also been reported in Florida on Aug. 20.