Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 24
Sanskrit:
यदा चन्द्रश्च सूर्यश्च तथा तिष्यबृहस्पती ।एकराशौ समेष्यन्ति भविष्यति तदा कृतम् ॥ २४ ॥
ITRANS:
yadā candraś ca sūryaś catathā tiṣya-bṛhaspatīeka-rāśau sameṣyantibhaviṣyati tadā kṛtam
Translation:
When the moon, the sun and Bṛhaspatī are together in the constellation Karkaṭa, and all three enter simultaneously into the lunar mansion Puṣyā — at that exact moment the age of Satya, or Kṛta, will begin.