Quoting_commentary for Joel 2:15

תִּקְע֥וּ שׁוֹפָ֖ר בְּצִיּ֑וֹן קַדְּשׁוּ־צ֖וֹם קִרְא֥וּ עֲצָרָֽה׃

Blow the horn in Zion, Sanctify a fast, call a solemn assembly;