Shiny Pokemon GO event today: Cranidos, Shieldon, Dialga, Porygon

Starting today, the 23rd of July, 2021, Pokemon GO has an event running courtesy of the Ultra Unlock series during Pokemon GO Fest 2021. The first event is Ultra Unlock Part 1: Time, and it runs from today until August 3, 2021, at 8PM local time. The idea here is that Pokemon from what appear to be "various eras" will pop up in the wild, in raid battles, and in 7km eggs. That means we've got everything from Omanyte (ancient, very old), to Porygon (super futuristic).