I've been studying the P&P calendar set up by Ellen Moody. As Linden had pointed out before, there was a discrepancy on the Easter dates.

But till now, I've not noticed another. Usually, the date of Netherfield Ball (Tuesday, November 26th) is the reference to try to design a chronology of the story. But, now I've found another sure date in Mr. Gardiner's letter informing Lydia and Wickham have been discovering. His letter is dated:

"Gracechurch-street, Monday, August 2". (P&P Chapter 49)

In Ellen Moody's calendar, she changes it explaining: says:

Mr Gardiner's letter to Mr Bennet arrives-

Mon, Aug 17th (dated the 2nd by Austen, and thus originally written or undergoing a revision in the year 1802).

I suspect if we change the Easter date to what Linden has suggested (an earlier Easter date), one could keep JA original date for Mr. Gardiner's letter (Monday, August 2th)

Does anyone know if there is an on-line resource to know if it's possible to have one year Tuesday November 26h and the following year a Monday August 2nd and what years of late 18th and early 19th centuries could match that criteria?