PAL

Ptolemaeus Arabus et Latinus

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μεγίστη ἡμέρα‘longest day’

Greek

References: Alm. Heiberg: II.2, 89:15; I.5, 18:2
Translated into:
Arabic: النهار الأطول [Alm. MS Leiden: f. 14v]
Arabic: النهار في أطول طوله [Alm. MS Tunis: ]
Arabic: طُوّال الأيّام [Alm. MS Leiden: f. 4v]
Arabic: أطول ما يكون من النهار [Alm. MS Tunis: 19b.14]
Modern translations:
English: longest day [Alm. Toomer: 41; 76]