Skandapurana 1.3.5.29

1.3.5.29

amarāvatyāṃ supratiṣṭhamamareśvarasaṃjñakam..
varuṇeśvaraṃ ca vāruṇyāṃ yāmyāṃ kāleśvaraṃ prabhum.. 7.29 ..

In Amarāvatī the well-established one named Amareśvara; / Varuṇeśvara in the western quarter, and Lord Kāleśvara in the southern;