No information regarding a city named Panjangjiwo is provided in the source material. The provided text focuses exclusively on Surabaya, which is the capital and largest city of East Java province in Indonesia.
Surabaya is located on the northeastern corner of Java island on the Madura Strait and serves as one of the earliest port cities in Southeast Asia. It is recognized as one of Indonesia's four main central cities, alongside Jakarta, Medan, and Makassar.