Mahabharata 13.107.52

मध्यंदिने निशाकाले मध्यरात्रे च सर्वदाचतुष्पथान्न सेवेत उभे संध्ये तथैव च

madhyaṃdine niśākāle madhyarātre ca sarvadācatuṣpathānna seveta ubhe saṃdhye tathaiva ca

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