Also St. Raphael of Brooklyn is commemorated by the OCA on February 27, the anniversary of his death, and by the Antiochian Orthodox Church on the first Saturday of November.
Simple reason, February 27 is the anniversary of his repose, and many Antiochian parish celebrate this day. But because it falls during the Great Fast the local Bishops for the Antiochians decided that the first Saturday before St. Raphael's patronal feast day (The Synaxis of the Archangels, which was also the day he was baptized) would be a more appropriate day so that a festal celebration could be held.
The text for the two days are very different and among the opinion of many there is thanks that the OCA text fall during the fast and are thus omitted in favor of Triodian text because they are almost laughable at times. The Lectionary difference exist because the Antiochian text treat him as a Hierarch on the level of Ignatius, Spyridon and Nectarios while the OCA text puts him with missionaries saints.