作息时间. xjlt.gov.cn (in Chinese). 26 August 2008. Archived from the original on 12 October 2014.
cas.cn
sourcedb.cas.cn
Guo, Qing-sheng (2001). 中国标准时制考 [A Study on the Standard Time Changes for the Past 100 Years in China] (PDF). China Historical Materials of Science and Technology (in Chinese (China)). 22 (3): 269–280. 1000-0798(2001)03-0269-12. Archived from the original(PDF) on 20 December 2016. Retrieved 9 December 2016.
"O Serviço de<<Hora Exacta>> na Internet". Direcção dos Serviços Meteorológicos e Geofísicos [Meteorological and Geophysical Bureau] (in Portuguese). Archived from the original on 16 July 2011. Retrieved 27 March 2011.
黑河综合遥感联合试验：冰沟流域加密观测区径流加强观测数据集 [WATER: Dataset of intensive runoff observations in the Binggou watershed foci experimental area]. 国家青藏高原科学数据中心 [National Tibetan Plateau Data Center] (in Simplified Chinese). Retrieved 26 March 2021.
web.archive.org
时间的概念 [The concept of time]. 国家授时中心科普网站 (in Chinese). Archived from the original on 16 October 2012.
Guo, Qing-sheng (2001). 中国标准时制考 [A Study on the Standard Time Changes for the Past 100 Years in China] (PDF). China Historical Materials of Science and Technology (in Chinese (China)). 22 (3): 269–280. 1000-0798(2001)03-0269-12. Archived from the original(PDF) on 20 December 2016. Retrieved 9 December 2016.
冷知识："北京时间"的由来. Xinhua (in Simplified Chinese). 3 November 2015. Archived from the original on 9 November 2015. Retrieved 3 November 2015.
2 节气、数九、昼长、乌鲁木齐时间. xjxnw.gov.cn (in Chinese). 22 February 2011. Archived from the original on 17 October 2014. Retrieved 12 October 2014.
"O Serviço de<<Hora Exacta>> na Internet". Direcção dos Serviços Meteorológicos e Geofísicos [Meteorological and Geophysical Bureau] (in Portuguese). Archived from the original on 16 July 2011. Retrieved 27 March 2011.
xinhuanet.com
news.xinhuanet.com
冷知识："北京时间"的由来. Xinhua (in Simplified Chinese). 3 November 2015. Archived from the original on 9 November 2015. Retrieved 3 November 2015.
