Bhagavad Gita 2.69

या निशा सर्वभूतानां तस्यां जागर्ति संयमी |
यस्यां जाग्रति भूतानि सा निशा पश्यतो मुने:

Translation

What all beings consider as day is the night of ignorance for the wise, and what all creatures see as night is the day for the introspective sage.