Crate philiprehberger_date_utils 

Date and time utilities — business days, date ranges, holiday calendars, and formatting shortcuts.

Example

use philiprehberger_date_utils::DateRange;
use chrono::NaiveDate;

let start = NaiveDate::from_ymd_opt(2026, 1, 1).unwrap();
let end = NaiveDate::from_ymd_opt(2026, 1, 31).unwrap();
let range = DateRange::new(start, end);

Structs

DateRange

An inclusive date range from start to end.

NoHolidayCalendar

A calendar with no holidays — only weekends are non-business days.

USFederalCalendar

US Federal holiday calendar with weekend adjustment rules.

Traits

HolidayCalendar

A calendar that can report which dates are holidays.

Functions

add_business_days

Add (or subtract) business days to a date, skipping weekends and holidays.

business_days_between

Count the number of business days between start (inclusive) and end (exclusive).

end_of_month

Returns the last day of the month containing date.

end_of_quarter

Returns the last day of the quarter containing date.

fiscal_year

Returns the fiscal year for a given date with a custom fiscal-year start month.

format_iso

Format a date as “2026-03-19”.

format_long

Format a date as “March 19, 2026”.

format_short

Format a date as “Mar 19, 2026”.

is_business_day

Returns true if the date is a business day (not a weekend, not a holiday).

next_business_day

Returns the next business day strictly after date.

quarter

Returns the quarter (1-4) for the given date.

start_of_month

Returns the first day of the month containing date.

start_of_quarter

Returns the first day of the quarter containing date.

years_between

Returns the number of full years between two dates (age-style calculation).