The category of transition words that demonstrates when or where something occurred is "time/location" transition words. These transition words help to indicate the timing or location of events or actions in a sentence or paragraph. They provide a sense of chronological order or spatial relationship. To find examples of time/location transition words, you can refer to a list of commonly used transition words or search for specific examples online.
The category of transition words that demonstrates when or where something occurred is "time/location".