Microsoft Visual Basic represents time of day as the specified time on the minimum date supported by DateTime, which is January 1, 0001 C.E. However, the System.Globalization.TaiwanCalendar class does not support that minimum date. Consequently, if your application calls a method to format the time of day using the current calendar but does not specify a format specifier, formatting uses the ISO 8601 sortable ("s") date/time pattern format specifier instead of the default general ("G") date/time pattern format specifier. For more information, see Standard DateTime Format Strings.