10/15/2023 0 Comments Shanghai gmt time zoneit is unclear where this 5:52 number came from. The Zikawei Time was also described as GMT+ 8:05:43.3 in 1906 US Navy records ( ). Shanghai mean time is reckoned from the 120th meridian, 8h. If you are in Shanghai, the most convenient time to accommodate all parties is between 5:00 pm and 6:00 pm for a conference call or meeting. When planning a call between Shanghai and GMT, you need to consider that the geographic areas are in different time zones. Here’s a 1908 North-China Herald ad that mentions the Shanghai local time as GMT+8 (page 811 on ): The best time to call from Shanghai to GMT. The almost 6 min change looks more like Zikawei’s switch from Shanghai Mean Solar Time to GMT+8, which Chinese sources described as happened in the previous century. Shanghai remained in the Central Plain time zone whose clock provider was still Zikawei (or Sicawei), the only change at the time I can find is that the Beijing Mean Solar Time was replaced by the Central Plain time for astronomy calendar purpose, but that was a 14-minute difference. The KMT moved the capital to Nanking along with central observatory duties. In 1928 the Beiyang government was overthrown by the KMT. I looked through the Decemand Januissue of the Shanghai based Shenbao (申報) newspaper but didn't find any articles warning its readers of the coming time change. Not entirely clear to me exactly how this worked since I thought there would have to be some standardization with other non-Chinese timezones, but it is all I was able to find with a quick search on the Chinese side of this discussion. This time zone does not change for daylight savings. Comments: east China - Beijing, Guangdong, Shanghai, etc. Search for a city to find the local time. The time and date in this time zone is: 3:35 PM on Thursday, Apr 27, 2023. It is, however, further east than the old capital Beijing (around 116°ish) The current Asia/Shanghai time zone offset is: UTC/GMT +8 hours. It says at 120° but that is not Nanjing but more like halfway between Shanghai (around 121°) and Nanjing (118-119°). While latter two based their almanac on the work of the previous one, they no longer use Beiping (now again called Beijing) standard time for time zone calculations but use Nanjing standard time This is the only entry for 1928 (which as points out, is right in the midst of the Northern Expedition unification effort).īasically this says there is a 1928 shift in control from the former central astronomical institution (中央觀象台) to have its duties divided between the new Nanjing government's astronomical research institute (天文研究所) and its meteorology research institute (氣象研究所). One of the commenters here, wubotao, pointed to this passage on the Chinese wikipedia entry for the Chinese Time Zone (中國時區) I did, however, poke around some postings in Chinese about Jon Skeet's Stack Overflow posting. I'm actually deeply suspicious about the data used on TimeAndDate for historical times, and I suspect things were a lot more messy on the ground in China in late 19th to mid-20th century, even with the growth of telegraph etc.
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