NengoCalc (Tool for converting Japanese dates into Western equivalents)

The program interactively converts dates from julian to mdy and vice versa.

Although a stem-branch cannot be used to deduce the actual day in historical events, it can assist in converting Chinese dates to other calendars more accurately.

To convert dates between the two calendars, the following periods have to be taken into consideration:

There are at least four hypotheses used to convert dates from the Gregorian calendar:

When converting pataphysical dates to Gregorian dates, the appendage (vulg.)

To convert dates from 1 January to 31 March prior to that year, the number to add or subtract is 542; otherwise, it is 543.

Nevertheless, since the reformed calendars had fixed relationships to each other and to the Julian calendar, the process of converting dates between them became quite straightforward, through the use of conversion tables known as hemerologia.

This makes it easy to convert dates to or from Gregorian.

Differences in birth dates may be the result of mistakes in converting traditional dates to republican calendar dates.