Java tutorial
//package com.java2s; import java.util.Calendar; import java.util.Date; public class Main { public static boolean isSameDay(long timestamp1, long timestamp2) { Calendar cal1 = Calendar.getInstance(); Calendar cal2 = Calendar.getInstance(); cal1.setTime(new Date(timestamp1)); cal2.setTime(new Date(timestamp2)); boolean sameYear = cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR); boolean sameDay = cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR); return sameYear && sameDay; } }