तृतीये तूर्यघोषेण संविष्टश्चतुर्थपञ्चमौ शयीत ॥ कZ_०१.१९.२० ॥
tṛtīye tūryaghoṣeṇa saṃviṣṭaś caturthapañcamau śayīta
In the third part of the night, having retired to the sound of instruments, he should sleep during the fourth and fifth parts.
Signals standardize the palace timetable, enabling coordinated guard duty, access control, and predictable executive availability.