Matsya Purana — The Attendant Hosts of the Sun and Moon: Monthly Gaṇas
हैमन्तिकौ च द्वौ मासौ निवसन्ति दिवाकरे अंशो भगश्च द्वावेतौ कश्यपश्च क्रतुश्च तौ //
haimantikau ca dvau māsau nivasanti divākare aṃśo bhagaśca dvāvetau kaśyapaśca kratuśca tau //
During the two winter months (Hemanta), these dwell in the Sun: the two Ādityas—Aṁśa and Bhaga—and likewise the two sages—Kaśyapa and Kratu.
It does not describe Pralaya directly; it outlines cosmic order by mapping winter months to specific Ādityas and sages residing in the Sun, emphasizing regulated time as part of sustained creation.
By grounding the calendar in divine-cosmic correspondences, it supports dharmic scheduling—choosing proper seasons/months for rites, governance cycles, and household observances aligned with the Purāṇic view of time.
Ritually, it aids timing: Hemanta is linked with Aṁśa and Bhaga, guiding season-appropriate observances; architecturally it is indirect, but such calendrical mappings are often used to select auspicious periods for temple building and consecration in related Purāṇic practice.