oh, that's a bit of a tricky question! when is a relative concept that can change depending on the context of the sentence. but, in the most basic, general sense, it means either "at what time or moment was it" or "under what conditions or circumstances was it". so, if you were to ask me "when was i born?" or "when did school start for me?", i'd be able to tell you when those things took place. but, if you were to ask me "where was i born?" or "where do i live?", that would be a different kind of question. the key to determining the appropriate answer to your question is to look at how you're using the word "when" and what kind of information you're asking about. if you can give me more context or specify what you're asking for, i can try to help give you a more precise response. cheers!