#' @param limit Maximum number of indices to return
#' @param same_season Should the indices correspond to day in same season?
#' @param days_in Optional set to intersect with results (NULL to discard)
#' @param limit Maximum number of indices to return
#' @param same_season Should the indices correspond to day in same season?
#' @param days_in Optional set to intersect with results (NULL to discard)
#'
#' @export
getSimilarDaysIndices = function(index, data, limit, same_season,
#'
#' @export
getSimilarDaysIndices = function(index, data, limit, same_season,