Derafu Date

Introduction
Months, periods, working days, date parsing and translatable date messages in PHP, with immutable objects and no hidden clock
Months
Month, an immutable calendar month that is written as AAAA-MM or as the number AAAAMM
Periods
Period, an immutable range of days that can be a month, a quarter, a semester, a year or any cycle
Date Units
DateUnit, to move a date by days, weeks, months, quarters, semesters and years, and Weekday
Parsing
Read and validate dates, strictly or like PHP does, and validate the periods written as numbers
Calculations
Age, days and months between dates, matching days, weeks and lists of years
Working Days
WorkCalendar, an immutable calendar of working days with the weekend and the holidays that are given to it
Formatting
DateFormatter describes dates, months and elapsed time as translatable messages, so a language is added with a catalogue and no code
Clocks
SystemClock and FixedClock, the PSR-20 clocks of the package
Errors and Translations
The exceptions of Derafu Date and how to translate their messages
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Last updated on 05/11/2026 by Anonymous
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