Discrepancies between death certs & headstone

[big g]

I had always assumed the date of death on a headstone would be accurate, but no; visiting a local church graveyard where generations of my husband's family are buried, I decided to take some pics of the headstones, even though I had looked at them many times before.
I uploaded the pics in order to attach them to my family tree programme, at the same time I dug out the death certificates for the two folk on one particular headstone.....................found discrepancies as follows:-

Richard - death cert. date 23rd December 1955 ---------headstone date 24th December.

Martha - death cert. date 22nd January 1944................headstone date 26th January.

Not sure it matters but it shows errors do happen

[MaryA]

Strange perhaps memory is iffy when emotional, thinking that headstones are usually added a couple of months after the burial.

[daggers]

One of my chaps has 26, 28 AND 29 December 1865 as his date of death from various sources. I usually take the middle one, as that is on the death cert.

D

[Fledge]

I have a couple of instances of this, where the date on the headstone is different to other records.