First Day of Year

year_first(
  date = today(),
  year_start_month = get_year_start_month(),
  year_start_day = get_year_start_day(),
  round = FALSE,
  week_start = 1L,
  week_min = get_week_min(),
  iso = FALSE,
  locale = NULL
)

Arguments

date

Date or year vector

year_start_month

integer 1L for January (default) and 12L for December

year_start_day

integer 1L for first day and 31L to last day of year_start_month

round

logical

week_start

integer Only used if round. 1L for Monday (default) and 7l for Friday

week_min

integer Only used if round. A which point should should date start being rounded up?

1L always rounds Up to the next given day
3L rounds the last 4 days of the week to the next given day (HalfDown)
4L (ISO) rounds the last 4 days of the week to the next given day and the first 3 days of the week to the previous given day (HalfUp)
7L always rounds Down to the previous given day

iso

logical

locale

logical to catch current locale or character language code

Value

Date vector