from the year dot
From an unspecified date in time that occurred long ago. My grandmother always says that she's loved cooking from the year dot, but my grandfather is quick to point out that she hated cooking when they first met. Gosh, I don't know how long that festival's been going on. From the year dot? Our family line has presided over this land from 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.
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