This module is intended for processing of date strings. It is used by Module:WikidataIB

This function is the engine behind c:template:Complex date. Please see that template for full documentation

should not be used directly but only through c:Template:Other date and other templates
{{#invoke:Complex_date|complex_date|adj1=|date1=|era1=|precision1=|conj=-|adj2=|date2=|era2=|precision2=|lang=}}

or

{{#invoke:Complex_date|complex_date|1=|2=|3=|era=|lang=}}
1
option. See c:Template:Other date
2
date #1
3
date #2
conj
in case the link between the two dates: "-" (from-until), between, or, and (see c:template:Complex date)
adj1, adj2
adjectives and prepositions used to describe single date. Possible values: early, mid, late, spring, summer, fall, winter, 1st half, 2nd half, 1st quarter, 2nd quarter, 3rd quarter, 4th quarter, etc. used for describing which part of date1 and date2 are involved (see c:template:Complex date)
date1, date2
the dates involved. Format: Number or whatever {{ISOdate}} takes.
precision1, precision1
usually year or more precise (default), but can also be decade, century or millennium, then the dates involved are centuries or millennia rather than specific dates
era1, era2
the eras that those dates are from (see c:template:Complex date) If parameter era is present, it overrides these two parameters.

The internationalization of the date formats can be found at Module:I18n/complex date