There was no "Year Zero" in regnal dating; 1223 was Year 1, 1224 was Year 2, and so forth. So the correct formula you need to use to work out the date is 1223 + 24 - 1 = 1246. AH 1246 began on 22 June 1830 and ended on 11 June 1831; this is why the AD converted date is quoted as "1830/31".
Quote: If I did my math right...
I'm terrible at math and usually can't be bothered trying to find the conversion tables in Krause. So I use an Islamic date converter website; this one is pretty good.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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