Extract from Market showing holidays

Market.java

@Singleton
public class Market {

  final static Set<LocalDate> HOLIDAYS = ImmutableSet.of(
      // ...
      new LocalDate(2012, 1, 2),    // New Years
      new LocalDate(2012, 1, 16),   // MLK
      new LocalDate(2012, 2, 20),   // Washington's Birthday
      new LocalDate(2012, 4, 6),    // Good Friday
      new LocalDate(2012, 5, 28),   // Memorial Day
      new LocalDate(2012, 7, 4),    // Independence Day
      new LocalDate(2012, 9, 3),    // Labor Day
      new LocalDate(2012, 11, 22),  // Thanksgiving
      new LocalDate(2012, 12, 25)   // Christmas
  );

  private final static Set<LocalDate> EARLY_CLOSE_DATES = ImmutableSet.of(
      // 2012
      new LocalDate(2012, 7, 3),    // Day Before Independence Day
      new LocalDate(2012, 11, 23),  // Day After Thanksgiving
      new LocalDate(2012, 12, 24)   // Christmas Eve
      );

  /**
   * Returns whether the market is open at {@code t}.
   */
  public boolean isOpen(DateTime t) {
    t = t.toDateTime(ET);

    // closed weekends and holidays
    if (SATURDAY <= t.getDayOfWeek() || isHoliday(t)) {
      return false;
    }

    return !(t.isBefore(openingTime(t)) || t.isAfter(closingTime(t)));
  }

  // ... other varieties of is/was the market open / when will the market open
}