"Ditto spawns out of the usual spawn times"

#PokemonGO: At my house, a Pokemon spawns at :03, another at :13, and another at :26 every hour, every day, and at no other time. To my surprise, a Pokemon spawned at 10:18. Note that I had already captured the previous ones (from 9:26, 10:03 and 10:13), so it was not one of them respawning. That 10:18 Pokemon turned out to be a Ditto (disguised as a Pidgey).Was it already known that Ditto appears as an "extra" spawn, and not (not always?) among the regular, defined spawns?In any case, if you know when spawns occur at a given place, it may be the only way to know that a Pokemon is a Ditto before seeing the post-capture transform animation. via /r/TheSilphRoad http://ift.tt/2fZ9qrI