| Gregorian Year | ROC Year ( 民國 ) |
| 2020 | 109 |
The calendar uses 1912, the year of the establishment of the Republic of China (ROC), as the first year. The term “minguo” simply means “republic”. The ROC calendar follows the tradition of using the sovereign’s era name and year of reign, as did previous Chinese dynasties. Months and days are numbered according to the Gregorian calendar. The ROC calendar has been widely used in the early official documents of the ROC since 1912.
The ROC calendar is the official calendar used in Taiwan since 1945, and also adopted by Overseas Chinese and Taiwanese communities. Chorographies and historical researches published in mainland China covering the period between 1912 and 1949 also adopt the ROC calendar.