The Zbudza Formation of the East Slovak Basin is a consequence of major salinity crisis in Central Paratethys (Central Europe) in the Badenian age. The magnetostratigraphic investigation results of the P-3 borehole (NW of village Zbudza, Michalovce district, East Slovakia) were used to correlate the Zbudza Formation with magnetic time-scale (Berggren et al. 1995). From the most probable variant of correlation follows that the Zbudza Formation is coeval with Chrons C5ADr p.p., C5ADn, C5ACr, C5ACn, C5ABr, C5ABn and its numerical age is = 14.7–13.3 Ma (1.4 m.yr.). This time interval corresponds to planktonic biozone Globorotalia peripheroacuta Lineage Zone, lower and middle part and to calcareous nannoplanktonic Zone NN5 upper part and NN6 lower part. Thick delta and prodelta formations (ca. 2000 m) covering the Zbudza Formation originated in a relatively short time 13.3–13.0 Ma (0.3 m.yr.) during the uppermost Badenian.