date_to_calmonth_c      Date -> calmonth (character)
date_to_calmonth_n      Date -> calmonth (numeric)
date_to_calyear_c       Date -> calyear (character)
date_to_calyear_n       Date -> calyear (numeric)
date_to_calyearmonth_c
                        Date -> calyearmonth (character)
date_to_isoweek_c       ISO week (character) from Date object
date_to_isoweek_n       ISO week (numeric) from Date object
date_to_isoyear_c       ISO year (character) from Date object
date_to_isoyear_n       ISO year (numeric) from Date object
date_to_isoyearweek_c   ISO year and week (character) from Date object
date_to_season_c        Date to season.
date_to_seasonweek_n    Date to season week.
dates_by_isoyearweek    Dates of different days within isoyearweeks
isoweek_to_seasonweek_n
                        ISO week to season week (numeric). Season week
                        1 is natural week 30.
isoyear_to_last_date    Last Sunday in ISO year
isoyear_to_last_isoweek_n
                        Last ISO week (numeric) in ISO year
isoyear_to_last_isoyearweek_c
                        Last ISO yearweek (character) in ISO year
isoyearweek_to_isoweek_c
                        ISO yearweek to week (character)
isoyearweek_to_isoweek_n
                        ISO yearweek to week (numeric)
isoyearweek_to_isoyear_c
                        ISO yearweek to year (character)
isoyearweek_to_isoyear_n
                        ISO yearweek to year (numeric)
isoyearweek_to_last_date
                        Last date in ISO yearweek
isoyearweek_to_season_c
                        ISO yearweek to season.
isoyearweek_to_seasonweek_n
                        ISO yearweek to season week (numeric). Season
                        week 1 is natural week 30.
keep_sundays            keep_sundays
keep_sundays_and_latest_date
                        keep_sundays_and_latest_date
keep_sundays_and_latest_date_internal
                        keep_sundays_and_latest_date_internal
nor_workdays_by_date    Norwegian workdays and holidays by date
nor_workdays_by_isoyearweek
                        Norwegian workdays and holidays by isoyearweek
now_c                   Current time as character
seasonweek_to_isoweek_c
                        Season week to ISO week (character). Season
                        week 1 is ISO week 30.
seasonweek_to_isoweek_n
                        Season week to ISO week (numeric). Season week
                        1 is ISO week 30.
