R4DS Ch. 16

floor_date()

{lubridate}

round date-time down to floor

hour()

{lubridate}

return or set hour component of a date-time

update()

{stats}

update and refit a model

OlsonNames()

{base}

return vector of all time zone names

year()

{lubridate}

return or set year component of a date-time

force_tz()

{lubridate}

replace time zone to create new date-time

mdy()

{lubridate}

parse dates as month, day, year

today()

{lubridate}

return the current date

ymd()

{lubridate}

parse dates with year, month, and day components

dmy()

{lubridate}

parse dates as day, month, year

month()

{lubridate}

return or set month component of a date-time

mdy_hm()

{lubridate}

parse month, day, year and hour, minute

make_datetime()

{lubridate}

create date-times from numeric representations

second()

{lubridate}

return or set second component of a date-time

as_date()

{lubridate}

convert object to date

Sys.timezone()

{base}

return name of current time zone

ceiling_date()

{lubridate}

round data-time up to ceiling

round_date()

{lubridate}

round date-time

now()

{lubridate}

return current date and time

ymd_hms()

{lubridate}

parse dates and time

as_datetime()

{lubridate}

convert object to date-time

with_tz()

{lubridate}

return date-time in a different time zone

minute()

{lubridate}

return or set minute component of a date-time

The end!