Is the Islamic calendar actually a solar calendar? (No, it isn't).
TL/DR: No, it's a lunar calendar. There currently is a movement / trend online which claims that we have all misunderstood the nature of the Islamic calendar. Their central claim is that the Islamic calendar is actually a solar calendar, or a luni-solar calendar - meaning 12 lunar months with occasional leap years with 13 months. This is how the Jewish calendar currently works. They base the claim on the fact that some of the month names appear to have seasonal names, like 'Rabi al Awwal' means 'First Spring;, or that Ramadan means 'hot' which means is should always be in the summer, or just after the summer in the autumn. Their claims appear to totally go against the Quranic narrative, which affirms 12 month (and not 13) and indeed bans the practice of adding leap years, or manipulating the calendar, called Nasi. Recently, astronomer Muhammad Shauket Odeh has totally refuted these claims in this video : Dr Odeh's video is in Arabic - here is a summar...