This root form (lemma) is used in 2 different forms in the NT: τεσσαρεσκαιδεκάτη (NFS), τεσσαρεσκαιδεκάτην (AFS).
It is glossed in 1 way: ‘the fourteenth’.
OET ACTS 27:27 Greek word=τεσσαρεσκαιδεκάτη (tessareskaidekataʸ) Morphology=NFS English gloss=‘the fourteenth’ SR GNT ACTS 27:27 word 3
OET ACTS 27:33 Greek word=τεσσαρεσκαιδεκάτην (tessareskaidekataʸn) Morphology=AFS English gloss=‘the fourteenth’ SR GNT ACTS 27:33 word 18