Aruba refers to the UTC-4 time zone - the so-called Eastern Caribbean time, used year-round (without winter-summer separation). On it, the time difference with Moscow is 8 hours with a minus sign (in the same time zone is New York - when we have the night of the next day, there is still a day in the midst of the past for us).

If you are interested in the time difference with Kazakhstan - boldly add another 2 hours difference with Moscow. Thus, Kazakhstan - Aruba differ in time by 10 hours. So, for example, midnight in the capital of Aruba, the city of Oranjestad - is 10am the next day for Astana.