本系統提供臺灣史研究常用年代範圍之中西曆文件日期對照查詢，涵蓋年份自1368年至1989年。明清時期資料範圍包含明洪武元年（1368）至清宣統三年（1912）間中國各政權（明朝、明鄭、清朝、太平天國）。日本年份則包含明治元年（1868）至昭和六十四年（1989）。系統提供部分年份的二十四節氣精確日期之對照做為參考。

This system provides calendar lookups between various East Asian calendars and Western calendar for the date range during Taiwan history, from 1368 to 1989. Data range of Ming and Qing Dynasties includes all the regimes (Ming Dynasty, South Ming, Qing Dynasty, and Taiping) from 1368 to 1912. For the part of Japan rule, the dates ranging from the first year of Meiji (1868) reign to the 64th year of Showa (1989) reign are included. Parts of the precise dates corresponding to the Round Solar Terms are also provided to serve as references.