Wikipedia: Singapore was renamed Syonan-to (昭南島 Shōnan-tō?), meaning "Light of the South". Wikipedia:シンガポールは「南の光」を意味する「湘南島」と改名されました。U~ikipedia: Shingapōru wa `minami no hikari' o imi suru `Shōnan-jima' to kaimei sa remashita.
http://www.nicovideo.jp/watch/sm30899666