#' Compute Sun Rise/Set Times, Start/End of Twilight, and the #' Length of the Day at Any Date and Latitude #' #' A wrapper for Paul Schlyter's C-based library for computing #' sunrise, sunset, twilight start and end, plus the length of day for #' a given data and coordinates. #' #' @md #' @name daybreak #' @keywords internal #' @author Bob Rudis (bob@@rud.is) #' @useDynLib daybreak, .registration = TRUE "_PACKAGE"