JJY is an acronym for the Japanese radio time signal station located in Japan called "Japanese standard time". Synonyms for JJY include JST, which stands for Japan Standard Time. Other synonyms for JJY could include Nippon Standard Time, Tokyo Time, and Japan Time. JJY is used as the official time standard in Japan and is widely used in several other countries in Asia. It is essential for accurate communication, transportation, and navigation across time zones. With its history dating back to 1938, JJY provides an accurate and reliable time signal across various platforms, including radio, GPS systems, and smartphones.