Modelling East Asian Calendars in an Open Source Authority Database. Issue 2 (October 2016)

• Record Type: Journal Article
• Authors: Bingenheimer, Marcus; Hung, Jen-Jou; Wiles, Simon; Boyong, Zhang
• Is Part Of: International journal of humanities and arts computing. Volume 10:Issue 2(2016)
• Page Start: 127
• Page End: 144
• Publication Date: 2016-10
• Subjects: Chinese calendar -- Japanese calendar -- Korean calendar -- calendar conversion -- database -- Buddhist Studies; Humanities -- Data processing -- Periodicals; Arts -- Data processing -- Periodicals; 001.30285
• DOI: 10.3366/ijhac.2016.0164
• Languages: English
• ISSNs: 1753-8548

Abstract

Abstract : This paper discusses issues concerning the creation of conversion tables for East Asian (Chinese, Japanese, Korean) and European calendars and describes the development of an open source calendar database as part of the history of converting East Asian calendars. East Asian calendars encode both astronomical and political cycles. As a result, date conversion must in practice rely on complex look-up tables and cannot be done merely algorithmically. We provide a detailed overview of the history of such conversion tables and find that the modelling of these tables into the digital follows a trend of increasingly detailed computation of chronological time. The Buddhist Studies Time Authority Database was designed to allow computational conversion of the Chinese, the Japanese and the Korean Calendar, between each other, as well as with the Gregorian, proleptic Gregorian and Julian calendar. It relies on the Julian Day Number (JDN) as common referent for all conversions.