True when the year falls before the era's epoch. Defaults to false.
One-based day of the month.
Year as displayed in the calendar's era terms (always positive).
Hour of day (0 … hoursPerDay − 1).
Minute of hour (0 … minutesPerHour − 1).
Zero-based month index (into calendar.months.values).
Second of minute (0 … secondsPerMinute − 1).
Editable calendar parts for a worldTime value.