Pokémon GO Special Weekend July 2018

The first edition of the Pokémon GO Special Weekend event occurred in late July, 2018 throughout Japan and South Korea. In order to participate, Trainers needed a special "Invitation Ticket", which could be exchanged by an official partner: 7-Eleven, Lotteria, or SK Telecom.

Trainers could scan the QR code in the "Invitation ticket" to check in at the official partner's check-in PokéStops to participate in the event. Check-in was possible from 10:00 am to 8:00 pm except for some areas. Check-ins at one location did not restrict travelers from moving between cities through out the day.

Features in Japan
There would be increased special Pokémon spawns, which were different on each day of the event.

Increased spawnrate of Charmander and Unown in forms of letters B and S (Softbank).

Increased spawnrate of Squirtle and Unown in forms of letters J and T (Toho, Tully's & Joyfull).

Increased spawnrate of Pikachu and Unown in forms of letters D and M (McDonald's).

Increased spawnrate of Bulbasaur and Unown in forms of letters A and E (Aeon).