The exact dates of his reign are unknown but it is estimated that he came to the throne early in the second half of the 25th century BCE. Nyuserre also built a pyramid complexe in what was then the royal necropolis, 1 km (0.62 mi) to the south of Abu Gorab in Abusir. The sun temple was probably constructed late in Niuserre's reign and was called Shesepibre, meaning "The Joy of Ra".