This chatbot can respond to mentions of the form:
mm/dd/yyyy such as 2/14/1966 and June-2-1324yyyy such as 1944 and 0243mm/dd or dd/mm such as jun 2, 25 sept. and decem 2otd, on this day. (These texts are equal to the day and month when you reply to chatbot)It is able to specify in which language the chatbot tweets. in <language> format does this. For example, if the chatbot takes otd in Japanese reply, then it outputs a past event on the same month and day in Japanese.
It is able to filter output events by hashtags. The chatbot regards hashtags as entities and then analyze their metadata.