This is probably an easy one for the right person. My first use of the REPUBLICAN CALENDAR returned

User15703892299724606429

This is probably an easy one for the right person.
My first use of the REPUBLICAN CALENDAR returned a date that doesn't match the year that is written in the Index records. As this is my first attempt at the calendar, I must be the problem, but how?

I am looking at a marriage record in "Luxemburg Zivilstandsregister, 1796-1941 / Echternach / Naissances, mariages, décès 1796-1803". This is number 3 on image 239, 240 of 517.

https://www.familysearch.org/ark:/61903/3:1:3QSQ-G97J-TWVQ?i=238&cc=1709358&cat=64963

I originally looked at the index on image 250 of 517 for my Mathias Roos to get the date. https://www.familysearch.org/ark:/61903/3:1:3QS7-L97J-TW4D?i=249&cc=1709358&cat=64963

 It is my attempt to translate that date on the index that is bedeviling me. What I believe I see on the index is the date '10 Nivose AN 8". What I put into the Republican Calendar was -

10 Nivose AN XIII. The Gregorian equivalent returned was 31 Dec 1804. That would be fine EXCEPT that on page 250 of that same index it shows both "AN 8" and 1800. Earlier, the AN 8 births showed a Gregorian equivalent dates of 1799 - 1800 (owing to the beginning of the year on the Autumn equinox as a guess.) As far as I know "AN 8" and "AN XIII" should be equivalent.

 So, when was my Mathias Roos married on the Gregorian Calendar?

Thanks in advance. Marty Krauter

Fritz Juengling

This is what you put in: 10 Nivose AN XIII

This is not year 8, but year 13.

You need to enter VIII.

That will do the trick.

User15703892299724606429

Thanks Fritz, that did the trick.

Marty