A `date`

(Date) is a double vector. Its value represent the number
of days since the Unix "epoch", 1970-01-01. It has no attributes.

A `datetime`

(POSIXct is a double vector. Its value represents the
number of seconds since the Unix "Epoch", 1970-01-01. It has a single
attribute: the timezone (`tzone`

))

A `duration`

(difftime)

new_date(x = double())
new_datetime(x = double(), tzone = "")
new_duration(x = double(), units = c("secs", "mins", "hours", "days", "weeks"))
# S3 method for Date
vec_ptype2(x, y, ...)
# S3 method for POSIXct
vec_ptype2(x, y, ...)
# S3 method for POSIXlt
vec_ptype2(x, y, ...)
# S3 method for difftime
vec_ptype2(x, y, ...)
# S3 method for Date
vec_cast(x, to, ...)
# S3 method for POSIXct
vec_cast(x, to, ...)
# S3 method for POSIXlt
vec_cast(x, to, ...)
# S3 method for difftime
vec_cast(x, to, ...)
# S3 method for Date
vec_arith(op, x, y, ...)
# S3 method for POSIXct
vec_arith(op, x, y, ...)
# S3 method for POSIXlt
vec_arith(op, x, y, ...)
# S3 method for difftime
vec_arith(op, x, y, ...)

## Arguments

x |
A double vector representing the number of days since UNIX
epoch for `new_date()` , number of seconds since UNIX epoch for
`new_datetime()` , and number of `units` for `new_duration()` . |

tzone |
Time zone. A character vector of length 1. Either `""` for
the local time zone, or a value from `OlsonNames()` |

units |
Units of duration. |

## Details

These function help the base `Date`

, `POSIXct`

, and `difftime`

classes fit
into the vctrs type system by providing constructors, coercion functions,
and casting functions.

## Examples

#> [1] "1970-01-01"

#> [1] "1970-01-01 UTC"

#> Time difference of 1 hours