Do you ask kids for their xmas lists?
Last child birthday is early September then we're clear (except for me at the end of november but dont really do much for my birthday) and as soon as her birthday is past I start sorting.
But the kids are older now, and less easy to shop for. The toy of the year is no longer an easy win, and their wants are more expensive.
Usually I buy a few "surprise" bits from Sept onwards and ask for lists mid to late october.