The 10th Canto, 22nd Chapter of Bhāgavata Purāṇa, mentions young marriageable daughters (gopis) of the cowherd men of Gokula, worshiping Goddess Kātyāyanī and taking a vrata or vow, during the entire month of Mārgaśīṣa, the first month of the winter season (Śiśira), to get Śrī Kṛṣṇa as their husband.
When Arjuna was going to Dwarika with all Gopis during Mahabharata period, he was passing through the present Bhilwara region.
After this ceremony gops then march out of the temple on the Rang Rangeeli Gali where they stop to play holi with the gopis, who stand in groups along the street.
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On the first day of Lath Mar Holi gops ( shepherds ) from Nandgaon come to Barsana to play Holi with the gopis of Barsana.
The rasa lila takes place one night when the gopis of Vrindavan, upon hearing the sound of Krishna's flute, sneak away from their households and families to the forest to dance with Krishna throughout the night, which Krishna supernaturally stretches to the length of one Night of Brahma, a Hindu unit of time lasting approximately 4.32 billion years.