If one of these Sundays is a public holiday in Poland, it is not a shopping Sunday.
The Sunday trading ban only supports large stores (increased traffic on Saturday) and franchise chains (e.g. Żabka, Carrefour Express).
The existence of this trading ban does not significantly support small entrepreneurs.
Furthermore, people that are unable to work on weekdays are deprived of the possibility of working on Sundays (e.g. students) in most industries.
There are none and there won't be any.
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