Introduction

The ExtendedDateTimeFormat library is an implementation the Extended Date/Time Format (EDTF) extensions. Because EDTF is a proposed extension to the ISO 8601 standard, the features of EDTF are subject to change, and consequently, so are the features of this library. This library will likely undergo a series of breaking transformations; however, there will be stable releases along the way.

EDTF

The Extended Date Time Format is a proposed extension to the standard datetime format (ISO 8601). It includes support for:

Uncertain or approximate dates (e.g. "Around 1995" or "1995, though it can't be confirmed.'")
Sets of possible dates (e.g. "1992, 1994, or 1996")
Sets of dates (e.g, "1992, 1994, and 1996")
Intervals (e.g. "From 1992 to 1999");
Partially unspecified dates. (e.g. "Only the first two digits of the year have been supplied so far.");
Masked precision (e.g. "Some date in the 1950s.")
Seasons (e.g. "Spring of 1992")