#' Calendar for the cycle argument
#'
#' The ecos open API has been revised on 2022.06.01.
#' A calendar was created to respond to any type of date format according to the cycle argument.
#'
#' @format A data frame with 73049 rows and 6 variables:
#' \describe{
#' \item{D}{daily}
#' \item{SM}{semi-monthly}
#' \item{M}{monthly}
#' \item{Q}{quarterly}
#' \item{S}{semi-annually}
#' \item{A}{annually}
#' }
#' @examples
#' calendar
"calendar"
