public class TimeUtil {     public static final int SECONDS_IN_DAY = 60 * 60 * 24;     public static final long MILLIS_IN_DAY = 1000L * SECONDS_IN_DAY;     public static boolean isSameDayOfMillis(final long ms1, final long ms2) {         final long interval = ms1 - ms2;         return interval < MILLIS_IN_DAY                 && interval > -1L * MILLIS_IN_DAY                 && toDay(ms1) == toDay(ms2);     }     private static long toDay(long millis) {         return (millis + TimeZone.getDefault().getOffset(millis)) / MILLIS_IN_DAY;     } }