Format timestamps to match the HTTP specs

Dates/times in HTTP headers needs a specific format to be valid, and is furthermore always given in GMT time. These two functions aids in converting back and forth between the required format.

Usage

to_http_date(time, format = NULL)

from_http_date(time)

Arguments

time

A string or an object coercible to POSIXct

format

In case time is not a POSIXct object a specification how the string should be interpreted.

Value

to_http_date() returns a properly formatted string, while from_http_date() returns a POSIXct object

Examples

time <- to_http_date(Sys.time())
time
#> [1] "Thu, 07 Aug 2025 12:40:31 GMT"
from_http_date(time)
#> [1] "2025-08-07 12:40:31 GMT"