use chrono::Days;
mod date_span;
pub use date_span::DateSpan;
mod date_span_set;
pub use date_span_set::DateSpanSet;
mod tstz_span;
pub use tstz_span::TsTzSpan;
mod tstz_span_set;
pub use tstz_span_set::TsTzSpanSet;
pub(crate) const DAYS_UNTIL_2000: Days = Days::new(730_120);
pub(crate) const MICROSECONDS_UNTIL_2000: i64 = 946_684_800_000_000;