The traditional spring open cellars are held in Nový Šaldorf every third Saturday in May. Up to 20 wine cellars are open from 10 am to 8 pm. In addition to the wines, there is also a wide range of refreshments on offer. Dulcimer bands play in the cellar alleys in the afternoon. And again in the program a tasting competition for a full wheelbarrow of Chaldorf wines. The tasting day ends on the square by the historical press, where in the evening there is a concert of the well-known Znojmo music group ONKELS. On Friday evening, in front of the May Open Cellars, the winemakers hold a Concert under the Stars with refreshments and Chaldorf wine.