וַיָּ֛מָת חֲנַנְיָ֥ה הַנָּבִ֖יא בַּשָּׁנָ֣ה הַהִ֑יא בַּחֹ֖דֶשׁ הַשְּׁבִיעִֽי׃ (פ)
און חנַניָה דער נבֿיא איז געשטאָרבן אין יענעם יאָר אין זיבעטן חוֹדש.
Rashi
in that year, in the seventh month Is it not so that the seventh month is not of the year? Rather, he died on the day preceding Rosh Hashanah and commanded his children to hurry him after Rosh Hashanah, but not before, and they should conceal his death on that day in order to make Jeremiah’s prophecy appear false.