PAL

Ptolemaeus Arabus et Latinus

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% (the percent sign) is the placeholder for no, one or more than one character.
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النهار الأطول‘longest day’

Arabic

References: Alm. MS Leiden: f. 14v
Translation of:
Greek: μεγίστη ἡμέρα [Alm. Heiberg: II.2, 89:15; I.5, 18:2]
Synonyms:
أطول ما يكون من النهار[Alm. MS Tunis: 19b.14]
النهار في أطول طوله[Alm. MS Tunis: ]
طُوّال الأيّام[Alm. MS Leiden: f. 4v]