This version is old school. Please find jQuery plugins on npm.

jQuery Calendars

by Keith Wood

This plugin provides support for various world calendars, including a datepicker. * Calendars: Gregorian, Julian, Taiwanese, Thai, Persian, Islamic, Umm al-Qura, Hebrew, Ethiopian, Coptic, Nepali, Mayan. * Parse and format dates in all these calendars. * Style the datepicker using one of five themes, or use any of the standard Themeroller themes. * Over 70 localisations for Gregorian/Julian calendars.