public static void Test_ZonedDateTime_ForDisplay(int year, int month, int day, int hour, int minute, int second, string expectedText)
        {
            var zonedDateTime = new ZonedDateTime(Instant.FromUtc(year, month, day, hour, minute, second), DateCalculator.LondonTimeZone);

            Assert.Equal(expectedText, zonedDateTime.ForDisplay());
        }