This help topic is for R version 2.9.0. For the current version of R, try https://stat.ethz.ch/R-manual/R-patched/library/base/html/Ops.Date.html
Ops.Date {base}R Documentation

Operators on the Date Class

Description

Operators for the "Date" class.

There is an Ops method and specific methods for + and - for the Date class.

Usage

date + x
date - x
date1 lop date2

Arguments

date

date objects

date1, date2

date objects or character vectors. (Character vectors are converted by as.Date.)

x

a numeric vector (in days) or an object of class "difftime".

lop

One of ==, !=, <, <=, > or >=.

Examples

(z <- Sys.Date())
z + 10
z < c("2006-06-01", "2007-01-01", "2010-01-01")

[Package base version 2.9.0 ]