since the year dot

since the year dot

Since an unspecified date in time that occurred long ago. They've been holding that festival since the year dot—I'm not sure anyone really knows how old it is. My grandmother always says that she's loved cooking since the year dot, but my grandfather is quick to point out that she hated cooking when they first met.
See also: dot, since, year
Farlex Dictionary of Idioms.

since the year dot

or

from the year dot

BRITISH
If you say that something has been the way it is since the year dot or from the year dot, you mean it has been like that for a very long time. Most of these folks have been here since the year dot. That's the way contracts have been done from the year dot.
See also: dot, since, year
Collins COBUILD Idioms Dictionary, 3rd ed.

from, since, etc. the year ˈdot

(American English from, since, etc. the year ˈone) (informal) from, etc. a very long time ago: The case contained old papers going back to the year dot.
See also: dot, year
Farlex Partner Idioms Dictionary
See also:
  • from the year dot
  • from, since, etc. the year dot
  • the year dot
  • year dot
  • at the dot
  • dot
  • on the dot
  • a week from next Tuesday
  • Tuesday
  • dot (one's) i's
References in periodicals archive
The Earth's climate has been changing since the year dot, with heat waves and ice ages, it has nothing to do with carbon dioxide emissions (millions of tons of carbon dioxide in the atmosphere is computer generated gobbledegook).
Debrett's has been around since the year dot - well, 1769 to be precise - and it is a professional coaching company, publisher and authority on etiquette and behaviour.
"And although he has been in the sport since the year dot, he has managed to maintain his mojo, his passion across all these years.
But the fact is we have to have a third-place finisher because the Olympic movement, the IOC and FIFA have been hand in hand in football tournaments since the year dot.
The army have been putting their recruits including officer cadets through exercise courses since the year dot without doing research on the subject.
Someone rang them and said we were having a disco lights flashing the lot, the cops turn up, knock at the door, then a bemused cop asks: 'why lights and no noise?'" Pamela Burn: "Get a grip there's been parties in Jesmond since the year dot, and we never hurt a living soul!" Chris Loxley: "Would be much better getting them in proper nightclub where it's PS10 to get in then PS8 per drink."
Bullying has been a problem since the year dot. But bullies by nature are cowards, only feeling tough and brave when in a gang.
Steve added: "The judge may have been expecting a more traditional scene of a table covered in a pristine cloth with a wine bottle, but we've been doing traditional since the year dot.
He allows evil to take place in the world because he honours men's free will which he has done so since the year dot when he allowed Adam to disobey him.
Syngenta (and previous other names) has been there since the year dot. They do everything they can to keep the miserable public happy and well informed.
But Tom is also planning to do something else that's rather brilliant, donating one of his own kidneys to Grantly Budgen - a man's who's been on the waiting list for a sense of humour transplant since the year dot.
But Tom is planning to do something else that's rather brilliant - donating one of his own kidneys to Grantly Budgen - a man's who's been on the waiting list for a sense of humour transplant since the year dot.
I love sport and it has been part of my life since the year dot.
Well, Graeme has been designing since the year dot and likes nothing more to sit in front of his computer and design.
The people who have been here since the year dot are the club and they keep the values and winning desire at the forefront of everything we do.