Working with date and time accessors

If we want to access the individual parts of a date (year, month, day), we can retrieve the various components through the available accessor functions:

julia> earth_day = Date(2018, 4, 22) 
2018-04-22 

julia>year(earth_day) # the year 
2018 

julia> month(earth_day) # the month  
4

The API also exposes compound methods, for brevity:

julia> monthday(earth_day) # month and day 
(4, 22) 

julia> yearmonthday(earth_day) # year month and day 
(2018, 4, 22)

Similar accessors are available for DateTime—but no compound methods are provided:

julia> earth_hour = DateTime(2018, 4, 22, 22, 00) 
2018-04-22T22:00:00 

julia> hour(earth_hour) # the hour 
22 

julia> minute(earth_hour) # the minute 
0

Alternative accessors that return Period objects are also defined—they have uppercase names:

julia> Hour(earth_hour) # a period of 22 hours 
22 hours 

julia> Month(earth_hour) # a period of 4 months 
4 months 
 
julia> Month(earth_hour) |&gt...