Note 960 — Chapter LXXXII · SICILY DURING THE DESPOTISM OF THE ELDER DIONYSIUS AT SYRACUSE.
Reading edition
Xen. Hellen. ii, 2, 24. Ὁ ἐνιαυτὸς ἔληγεν, ἐν ᾧ μεσοῦντι Διονύσιος ἐτυράννησε, etc.
The year meant here is an Olympic year, from Midsummer to Midsummer; so that the middle months of it would fall in the first quarter of the Julian year.
If we compare however Xen. Hellen. i, 5, 21 with ii, 2, 24, we shall see that the indications of time cannot both be correct; for the acquisition of the despotism by Dionysius followed immediately, and as a consequence directly brought about, upon the capture of Agrigentum by the Carthaginians.
It seems to me that the mark of time is not quite accurate in either one passage or the other. The capture of Agrigentum took place at the close of B.C. 406; the acquisition of the despotism by Dionysius, in the early months of 405 B.C., as Diodorus places them. Both events are in the same Olympic year, between Midsummer 406 B.C. and Midsummer 405 B.C. But this year is exactly the year which falls between the two passages above referred to in Xenophon; not coinciding exactly with either one or the other. Compare Dodwell, Chronolog. Xenoph. ad ann. 407 B.C.