Bhagavad Gita 8.24

अग्निर्ज्योतिरहः शुक्लः षण्मासा उत्तरायणम्।तत्र प्रयाता गच्छन्ति ब्रह्म ब्रह्मविदो जनाः॥

agnirjyotirahaḥ śuklaḥ ṣaṇmāsā uttarāyaṇam |tatra prayātā gacchanti brahma brahmavido janāḥ ||

Fire, light, daytime, the bright fortnight, the six months of the northern path of the sun (the northern solstice) departing, then men who know Brahman go to Brahman.

If the sage, knowing the Supreme Spirit, goes forth with fire and light during the day, in the fortnight of the waxing moon, and in the six months before the Northern summer solstice, he will attain the Supreme.

Our plain-language meaning of this verse is waiting for scholar review.