I don't think there is a certain day for all brands/dealers. It probably depends on either what the manufacturer determines, or a specific sale a dealer is having.
My guess would be that winter discounts ending would be determined by the stock that anyone given dealer has on hand. There's always a chance to find a last years model mower throughout the new year.
My guess would be that winter discounts ending would be determined by the stock that anyone given dealer has on hand. There's always a chance to find a last years model mower throughout the new year.