find out the current date and time

specify a date by its place on the calendar

calculate a length of time

get information about a time zone

get the current time in a specified city

generate a calendar for a month

generate a calendar for a year

get information about the calendar

compute the date of a holiday

compute the dates of US and world Holidays for a given year

get the Unix encoding for the current time

get the Unix encoding for an arbitrary date and time

translate a Unix time encoding

compute geological epoch information