public void testGetFirstMillisecond() {
Locale saved = Locale.getDefault();
Locale.setDefault(Locale.UK);
TimeZone savedZone = TimeZone.getDefault();
TimeZone.setDefault(TimeZone.getTimeZone("Europe/London"));
Day d = new Day(1, 3, 1970);
assertEquals(5094000000L, d.getFirstMillisecond());
Locale.setDefault(saved);
TimeZone.setDefault(savedZone);
}