A day of the week.

The Modified Julian Day is a standard count of days, with zero being the day 1858-11-17.

Get a TimeOfDay given the fraction of a day since midnight.

convert day of year in the Gregorian or Julian calendars to month and day. First arg is leap year flag

Day of the month (1 to 31)

Day of the week

Day of the year (0 to 364, or 365 in leap years)

convert from proleptic Julian year and day format. Invalid day numbers will be clipped to the correct range (1 to 365 or 366).

convert from proleptic Julian year and day format. Invalid day numbers will return Nothing

The inverse of mondayStartWeek. Get a Day given the year, the number of the Monday-starting week, and the day of the week. The first Monday is the first day of week 1, any earlier days in the year are week 0 (as "%W" in formatTime).

The inverse of sundayStartWeek. Get a Day given the year and the number of the day of a Sunday-starting week. The first Sunday is the first day of week 1, any earlier days in the year are week 0 (as "%U" in formatTime).

Convert a ToD in some timezone to a ToD in UTC, together with a day adjustment.