Well, whaddayaknow, there is at least one internet site that can generate conversion tables for each year!
According to the lunar-Gregorian conversion calendar they generated for the Gregorian year 1906, the leap month for the lunar calendar was inserted after the 4th month. That means month #4 was doubled, and the 2nd month #4 is considered the leap month. (Assuming I correctly remembered what I was taught!)
That would indicate your cancel has the Gregorian date of 28May1906. Anybody feel free to correct me if I read my table incorrectly.
Litterally the date field says - the sixth day - of the additional (leap) month - in the bing wu year, i.e. he fortythird year of a 60 year cycle. Bing is the heavenly stem, wu the earthly branch.
It should now be the moment that somebody devoutedly rings the gong.
KHJ, thanks a lot for your crucial advice! That was enlightening.
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