This is an updated regional map based on the latest understanding about regionals. Originally created by u/zoglandboy on reddit, now updated by u/Mattman243 and pokemoncalendar.com

Last update: [9/5/20]

------------ [[ Type 1: Geographical Regionals ]] ------------
Type 1 regionals spawn in large areas usually based around continents and sub-continents or areas of similar cultural relevance. These are normally box-shaped as they use longitude and latitude as their outer limits.
------------ [[ Type 2: Habitat-based Regional ]] -------------
Type 2 regionals spawn based on habitat or climate rather than a geographic area. They can span across the globe, or be confined to a small section of a continent. These aren't bound by longitude and latitude, but rather seem to be free drawn on the map.
------------------ [[ Type 3: Paired Regionals ]] -----------------
Type 3 regionals come in pairs. One half will spawn on one side of dividing line, while the other half will spawn on the other side of it. This type includes…