date_span.Rd
date_spans are simplified lubridate::intervals. They only use dates (no time, not timezone).
date_span
date_span(first, last = NULL, clear = c("none", "last", "first", "both"))
Date (or truncation YYYY, YYYY-MM)
YYYY
YYYY-MM
Date (or truncation DD or MM-DD)
DD
MM-DD
character
R Object of class date_span