General Assembly Committee 1 - Disarmament and International Security
General Assembly Committee 2 - Economic and Financial
General Assembly Committee 3 - Social, Humanitarian and Cultural
General Assembly Committee 4 - Special, Political and Decolonization
General Assembly Committee 6 - Legal
Historical Security Council
It is really important to note that you do not know anything that happened after those specific dates for each debate (related to the issues themselves or even more generally e.g. avoid mentioning things such as inventions which happened after that time etc...) - your job is to engage in solving those problems given the conditions and knowledge of the precise time in which you are having the debate.
Useful Research- below you will find links which are very useful for your research - timelines to help you work out with confidence what you know and what you don't know in terms of the timing of the debate):