Function reference • dttr2

Add Units Add time units
`dtt_add_units()` `dtt_add_years()` `dtt_add_months()` `dtt_add_days()` `dtt_add_hours()` `dtt_add_minutes()` `dtt_add_seconds()`	Add Time Units
`dtt_date_add_time()`	Add Time to Date
Complete Date/Time Complete and test completed date/time vectors
`dtt_complete()`	Complete
`dtt_completed()`	Completed
Floor Vectors Coerce and test floored date/time vectors
`dtt_date()` `dtt_date<-`() `dtt_set_date()`	Floor Date
`dtt_date_time()`	Floor Date/Time
`dtt_floor()`	Floor Date/Time
`dtt_floored()`	Test Floored
`dtt_set_time()` `dtt_time()` `dtt_time<-`()	Floor Time
Get Decimal Date/Time Get decimal values for date/time vectors
`dtt_minute_decimal()`	Get Decimal Minute Values
`dtt_hour_decimal()`	Get Decimal Hour Values
`dtt_day_decimal()`	Get Decimal Day Values
`dtt_month_decimal()`	Get Decimal Month Values
`dtt_year_decimal()`	Get Decimal Year Values
`dtt_doy_decimal()`	Day of the Year Decimal
Get and Set Get and set values for date/time vectors
`dtt_years()` `dtt_years<-`() `dtt_set_year()` `dtt_year()` `dtt_year<-`()	Get and Set Year Values
`dtt_months()` `dtt_months<-`() `dtt_month()` `dtt_month<-`() `dtt_set_month()`	Get and Set Month Values
`dtt_day()` `dtt_day<-`() `dtt_days()` `dtt_days<-`() `dtt_set_day()`	Get and Set Day Values
`dtt_hours()` `dtt_hours<-`() `dtt_hour()` `dtt_hour<-`() `dtt_set_hour()`	Get and Set Hour Values
`dtt_minutes()` `dtt_minutes<-`() `dtt_minute()` `dtt_minute<-`() `dtt_set_minute()`	Get and Set Minute Values
`dtt_seconds()` `dtt_seconds<-`() `dtt_second()` `dtt_second<-`() `dtt_set_second()`	Get and Set Second Values
Get, Set or Adjust Time Zone Get, set or reset default time
`dtt_tz()`	Get, Set or Adjust Time Zone
`dtt_adjust_tz()`	Adjust Time Zone
`dtt_sys_tz()` `dtt_set_sys_tz()` `dtt_reset_sys_tz()` `dtt_default_tz()` `dtt_set_default_tz()` `dtt_reset_default_tz()`	Get, Set or Reset Default Time Zone
`dtt_set_tz()`	Set Time Zone
Get System Date/Time Get system date/time
`dtt_sys_date()`	Get System Date
`dtt_sys_date_time()`	Get System Date Time
`dtt_sys_time()`	Get System Time
Get Units Get and adjust units
`dtt_adjust_units()`	Adjust Units
`dtt_units()`	Get Units
`dtt_units_per_unit()`	Units per Unit
Leap Year Convert and test leap years
`dtt_feb29_to_28()`	Convert Feb 29 to Feb 28
`dtt_leap_year()`	Test for Leap Year
Set Days/Dayte Set days in month/year
`dtt_dayte()`	Dayte
`dtt_dayte_time()`	Dayte Time
`dtt_daytt()`	Dayte Time
`dtt_days_in_month()`	Days in the Month
`dtt_days_in_year()`	Days in the Year
`dtt_doy_to_date()`	Day of the Year to Date
`dtt_doy()`	Day of the Year
Subtract Units Subtract time units
`dtt_subtract_units()` `dtt_subtract_years()` `dtt_subtract_months()` `dtt_subtract_days()` `dtt_subtract_hours()` `dtt_subtract_minutes()` `dtt_subtract_seconds()`	Subtract Time Units
Check Time Check time/time zone
`check_tz()`	Check Time Zone
`chk_time()`	Check Time
Test Date/Time Object Test if object is a date/time vector
`dtt_is_date()`	Is Date
`dtt_is_date_time()`	Is Date Time
`dtt_is_dtt()`	Is Date or DateTime Object
`is.POSIXct()` `is_date_time()` `is.Date()` `is_date()` `is.hms()` `is_time()`	Is Date/Time
Missing Date/Time Missing date/time
`NA_Date_`	Missing Date
`NA_hms_`	Missing hms
`NA_POSIXct_`	Missing POSIXct
Other Date/Time Components Miscellaneous
`dtt`	dtt Object
`dtt_aggregate()`	Aggregate Date/Time
`dtt_decade()`	Decade
`dtt_diff()`	Time Difference
`dtt_excel_to_date()`	Convert Excel dates to dates.
`dtt_excel_to_date_time()`	Convert Excel date times to date times.
`dtt_season()`	Season
`dtt_study_year()`	Study Year
`dtt_wday()`	Get Week Day
`dtt_seq()`	Sequence
`dtt_wrap()`	Wrap
`vld_time()`	Validate Time
`dtt_date_from_ints()`	Create Dates from Integers
`dtt_time_from_ints()`	Create Time from Vectors
`dtt_date_time_from_ints()`	Create Date Times from Integers

Reference

Add Units

Complete Date/Time

Floor Vectors

Get Decimal Date/Time

Get and Set

Get, Set or Adjust Time Zone

Get System Date/Time

Get Units

Leap Year

Set Days/Dayte

Subtract Units

Check Time

Test Date/Time Object

Missing Date/Time

Other Date/Time Components