To keep the gopis in Vrndavana satisfied, Lord Balarama stayed there continuously for two months, namely the months of Caitra (March–April) and Vaisakha (April–May). For those two months He kept Himself among the gopis, and He passed every night with them in the forest of Vrndavana to satisfy their desire for conjugal love. Thus Balarama also enjoyed the rasa dance with the gopis during those two months. Since the season was springtime, the breeze on the bank of the Yamuna was blowing very mildly, carrying the aroma of different flowers, especially the flower known as kaumudi. Moonlight filled the sky and spread everywhere, and thus the banks of the Yamuna appeared very bright and pleasing, and Lord Balarama enjoyed the company of the gopis there.

>>> Ref. VedaBase => KB 65: Lord Balarama Visits Vrndavana