yadā meṣa-tulayor vartate tadāho-rātrāṇi samānāni bhavanti yadā vṛṣabhādiṣu pañcasu ca rāśiṣu carati tadāhāny eva vardhante hrasati ca māsi māsy ekaikā ghaṭikā rātriṣu.

yada-when; mesa-tulayoh-in Mesa (Aries) and Tula (Libra); vartate-the sun exists; tada-at that time; ahah-ratrani-the days and nights; samanani-equal in duration; bhavanti-are; yada-when; vrsabha-adisu-headed by Vrsabha (Taurus) and Mithuna (Gemini); pancasu-in the five; ca-also; rasisu-signs; carati-moves; tada-at that time; ahani-the days; eva-certainly; vardhante-increase; hrasati-is diminished; ca-and; masi masi-in every month; eka-eka-one; ghatika-half hour; ratrisu-in the nights.