import java.util.Calendar; import java.util.TimeZone; public class FindTime { public static void main(String[] args) { // currentTimeMillis() returns time since 1970 long seconds = System.currentTimeMillis(); System.out.println(seconds/1000l); Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC")); calendar.clear(); calendar.set(2022, Calendar.MAY, 30, 14, 1, 54); long secondsSinceEpoch = calendar.getTimeInMillis() / 1000L; System.out.println(secondsSinceEpoch); } }