Tunisia 1/2 Dinar km#346 1996 - 2013: incorrect Hijra date conversion to Gregorian calendar, 1997 missing

Hi,

I've lately added the following coin to my collection: 1/2 Dinar from Tunisia km#346 1996-2013. I couldn't find the coin quickly in the catalog because when I entered "1997" into "Gregorian date" text-field in Advanced Search, no results turned up. And my coin is dated 1997 - 1418. When I finally did find the coin after a tremendous effort and carefully examined the coin type catalog page, I found out that there is incorrect conversion of Hijra 1996 date to Gregorian calendar, namely 1418 must correlate to 1997, NOT to 1998 as it is stated in Numista. That was the reason I could not find my coin at once. So is there any way we could deal with the issue to solve it? Can we change it in Numista so that the correct date - 1997/1418 - is displayed for km#346 ?

Please see the attached screenshot to better understand the issue!!!

Thank you.

It's the same with this one: https://en.numista.com/catalogue/pieces1199.html

The problem lies in the coding of Numista, it can only show whole numbers and In your example AH1418 is AD1997.5 and rounded up to the nearest whole year AD1998.

I think the AD date is calculated only when the date line is entered first time, after that, it can be corrected by a catalogue moderator. There are several examples on Numista where one AH-date corresponds to two AD-dates or vv.

https://en.numista.com/forum/topic35847.html#p302816

Thank you for your answers!!! So can moderators correct it then?   We beg you!! ))