RE: A family Halloween

I specifically did not search for such a query. The country is big. And our region is a bit special in terms of "old Slavic holidays".
Perhaps I should say that there are old Tatar and Udmurt villages across the river in our area. There are really old holidays there, and there is a special holiday—Sabantuy ("plow holiday") is an annual national holiday of the end of spring fieldwork among the Tatars and Bashkirs

We can say that there was an autumn holiday - September 21, which is simply called the Harvest Festival. But... I say that in September, not all the crops are harvested from the fields, from the gardens, so I doubt the celebration of this day among the ancient Slavs, especially since the Slavs are southern, eastern, and northern. And these are regions and life that are completely different in terms of climatic conditions. Non-Slavic customs and holidays have been preserved better - for example, Tatars, Chuvash, Bashkirs, Udmurts, Kalmyks, peoples of the Caucasus, Siberia, and the Far East.