In order to unlock Pokemon GO’s Zapdos Day, players around the world will need to complete special challenges on July 14 and July 15. There are rewards for each tier of the challenge and, if everything is completed in time, trainers will get five free Raid Passes and the chance to catch a shiny version of Zapdos.
Here are the details from the official announcement:
If the Articuno Day event is any indication, it will be incredibly easy to find Battle Raids to participate in during the Zapdos event (assuming the community unlocks it). Nearly every Gym in sight spawned the Legendary when the three hour event started and they stayed that way for the whole span.
Zapdos is still a fairly strong Pokemon in the metagame, so players should use this opportunity to get out and secure a few more catches.
Pokemon GO is available now in select regions on Android and iOS devices.