date.mdy: Convert from Julian Dates to Month, Day, and Year

In date: Functions for Handling Dates

Convert from Julian Dates to Month, Day, and Year

Description

Convert a vector of Julian dates to a list of vectors with the corresponding values of month, day and year, and optionally weekday.

Usage

date.mdy(sdate, weekday = FALSE)

Arguments

sdate	a Julian date value, as returned by mdy.date(), number of days since 1/1/1960.
weekday	if TRUE, then the returned list also will contain the day of the week (Sunday=1, Saturday=7).

Value

A list with components month, day, and year.

References

\bibshow

date::Press+Teukolsky+Vetterling:1992

Examples

day <- 7
temp <- date.mdy(mdy.date(month = 7, day = day, year = 1960))
## Check for illegal dates, such as 29 Feb in a non leap year
if (temp$day != day) {
  cat("Some illegal dates\n")
} else {
  cat("All days are legal\n")
}

date documentation built on Feb. 18, 2026, 9:07 a.m.