study break is around feb to march. depending on when your lesson end and when your prelim will start. after prelim, you get to choose your revision classes which is in april and again it depends on when you choose your lesson. you can cramp all in first two weeks of april and last few weeks of march and you will get maybe last two weeks of april for study. or some people will wanna spread it over the whole month. the good thing for UOL is that you get to choose your lesson so everyone will have different break period.
Or you can go to your portal, under the left hand columns, go to the bottom few and you can see this option-Online letters and when you click it, you can see one option-programme schedule. you select it and submit it and then a pop up will show. from there, you can see all the period of the exams or your revision lectures.
i don't know whether the Year 1s will get to see but you can try it.