Sri Krishna Vasanta Rasa

Krsna performs rasa lila fo two varieties, one in the autumn season and one in the spring season, on vaisakha purnima. Balarama also performs rasa dance at this time.
 
     In order to keep the gopis in Vrndavana satisfied, Lord
     Balarama stayed there continually for two months, namely the
     months of Caitra and Vaisakha. For those two months he kept
     himself among the gopis and he passed every night with them
     in the forest of Vrndavana in order to satisfy their desire
     for conjugal love. Thus Balarama also enjoyed the rasa dance
     with the gopis during those two months.
                             Krsna Book II p.78