וַֽיְהִי֙ לִשְׁנָתַ֣יִם יָמִ֔ים וַיִּהְי֤וּ גֹֽזְזִים֙ לְאַבְשָׁל֔וֹם בְּבַ֥עַל חָצ֖וֹר אֲשֶׁ֣ר עִם־אֶפְרָ֑יִם וַיִּקְרָ֥א אַבְשָׁל֖וֹם לְכָל־בְּנֵ֥י הַמֶּֽלֶךְ׃
Decorridos dois anos inteiros, tendo Absalão tosquiadores em Baal-Hazor, que está junto a Efraim, convidou todos os filhos do rei.
Rashi on II Samuel
The were shearing. It was there custom to make a party when they sheared their flocks.