A publisher has apologised after its 2006 diary got a series of dates wrong.
The publishers said mistakes were made in the rush to deadline
Y Lolfa incorrectly listed days such as Shrove Tuesday, Palm Sunday and Mother's Day, and two of the biggest dates in the Welsh rural calendar, the Royal Welsh Show and Winter Show.
It even led to one chapel group, Tabernacl Church at Pontardawe, enjoying pancake day three weeks early after failing to spot the error.
The Ceredigion publisher said sorry and would check next year's more carefully.
It meant that Shrove Tuesday arrived at the Tabernacl Church on 7 February rather than 28 February - but members are resisting the temptation to break out the pancakes all over again quite so soon.
One, Dilys Waltes, said: "The only thing I can say is that a lot of pancakes were eaten... I think everyone had a good time".
They will not go entirely without enjoying themselves, however.
"I think our St David's Day supper in the chapel is around that time," she added.
But incorrect dates for the two agricultural shows at the Royal Welsh Showground in Llanelwedd could cause bigger problems for the less than eagle-eyed.
The Y Lolfa diary is published bilingually in Welsh and English
The main concern is that some people may have arranged holidays to cover the wrong dates.
"Yes, a number of people could have booked but most farmers know when the shows are on," said Alan Morris of the Farmers' Union of Wales.
"There is enough time before the Winter Fair, nearly a year, and enough time for people to note the correct date."
Y Lolfa has been publishing the diary for more than 20 years and a number of them are sold at the National Eisteddfod in the summer.
The company stressed this was the first time such mistakes had occurred, and vowed to ensure none would creep into the 2007 edition.
"I think it was a shambles on our behalf," said publishing manager Garmon Gruffudd.
"There was a bit of a rush to get it ready and one person was on honeymoon and with everything the mistakes crept in.
"I think at least three pair of eyes will have to check the diary for next year because this has caused us embarrassment.
"The only thing I can say is that we apologise to everyone."