The Cambridge History of India, Vol. I: Ancient India v1.c25.82

v1.c25.82

⁶ Dr Vincent Smith's disquisition on the date of the battle (p. 85 f.) suffers from one important datum having been left out—Strabo's statement, on the authority of Nearchus, that the Macedonian army was on the Acesines at the time of the summer solstice (xv, C. 692). This would support Arrian's statement that the battle was in the month of Munychion, i.e. probably about the middle of May, not in July as Dr Vincent Smith computes. (See Anspach, note 124.)