Bo chyba nie ma takiej jednoznacznej daty.
Za:
D Abulafia, The Great Sea. A Human History of Mediterranean, Penguin Group, str 537 & 542
QUOTE
The Arabs had no use for it and built a new city close by, at Tunis. Byzantium had lost another of its richest territories; the sliver of Spain conquered by Justinian had already been absorbed by the Visigoths in the 630s, leaving little more than loose authority over Ceuta, Majorca and Sardinia. Byzantine power in the western Mediterranean had to all intents vanished.
QUOTE
An outburst of piracy after the fall of Carthage in 698 was suppressed easily enough by the Byzantine navy, but the Byzantine loss of effective control of the seas west of Sicily allowed Muslim fleets a free hand off the islands and coastlines that still acknowledged, even if remotely, Byzantine overlordship: the Balearic islands, Sardinia, the Ligurian coast.