Arab and Persian sailors began settling Madagascar's coastline as early as the tenth and eleventh centuries, trading along the same Indian Ocean routes that carried Islam to the Swahili coast of East Africa. The Antalaotra people, who settled the northwest around present-day Mahajanga, are generally credited as the first to actually establish Islam on the island, and their influence ran deep enough to leave Arabic-derived words in the traditional Malagasy calendar's names for months and days — a linguistic trace that survives among Malagasy of every religion, not only Muslims.
Antananarivo, however, developed very differently: it grew as the seat of the Merina monarchy in the central highlands, far from the coast, and was largely converted to Christianity in the nineteenth century. Today's Muslim population — estimated at a few percent of the country, drawn from native Malagasy communities as well as more recent Comorian and South Asian arrivals — is still concentrated mainly along the northwest and southeast coasts. That means prayer times for the capital have to be worked out for Antananarivo's own highland coordinates, distinct from the coastal towns where Malagasy Islam actually began.
Madagascar has no single published national convention for Fajr and Isha angles, so this page uses the Muslim World League standard — the same convention widely followed across the Indian Ocean rim, including by the Comorian and South Asian communities with ties to Malagasy Muslims.
Arab-descended Antalaotra traders settled the northwestern ports centuries ago, while the highlands around Antananarivo were converted to Christianity much later under the nineteenth-century Merina monarchy, so the country's older Muslim geography still tilts toward the coast.
Yes — the traditional Malagasy names for months and days of the week are borrowed from Arabic, a legacy of the early Antalaotra Muslim traders that persisted well beyond the Muslim community itself.
It affects clock times more than method — sitting near 19 degrees south and at roughly 1,300 meters elevation, the capital sees a more noticeable swing in day length between June and December than equatorial neighbors like Rwanda or DR Congo, so a Ramadan fast in December runs longer than one in June.
Yes — alongside the older Antalaotra-descended communities of the northwest, Comorian migrants and their descendants form a significant part of Madagascar's contemporary Muslim population, particularly in port towns.