My first sale order last year was just before 4pm on 22nd - a whole pile of furoshiki table gifts, baubles, crackers, wrapping paper and notebooks! Must stay away from those this year - but I am enjoying them now.
Yes, sale seems to normally starts 2-3 hours after next day delivery cut off point (once they've fulfilled those orders, start loading up). This year Toast has been a bit more unpredictable with sales timings though.
I've just checked my Toast order history (online & store) since the last winter sale ended. Excluding returns: loopback jersey trousers, a blue Garden Bloom bandana, 2x socks, tiered twill dress (summer sale), Riverstone bowl (sale), slate Alix trousers (sale), oak breadboard (sale), 4x breakfast bowls, Carla Murdoch colander, Reworn iKat dress, scoop necked linen dress (Sept sale), a quilt, and 2x alpaca arm warmers. I also bought a couple of gifts.
That list looks 😳 but I have been much less profligate than the previous few years and better at returning what I don't love. I've got a lot of pleasure out of using/wearing what I've bought this year.