since 28th of Adar was YT, 1st Nissan was necessary to state either to originally 30th of Adar (when full month) or to raise level of restriction on 29th Adar (also from eulogizing) bc between festivals
since 28th of Adar was YT, 1st Nissan was necessary to state either to originally 30th of Adar (when full month) or to raise level of restriction on 29th Adar (also from eulogizing) bc between festivals