That was 11:16 p.m. local time
in San Francisco.
Citations.
MLA
"San Francisco Chronicle homepage at Aug. 21, 2017, 6:16 a.m. UTC." PastPages. 21 Aug. 2017. Web. 20 Feb. 2019. <http://www.pastpages.org/screenshot/3495801/>
APA
San Francisco Chronicle homepage at Aug. 21, 2017, 6:16 a.m. UTC. (2017, Aug. 21). PastPages. Retrieved from http://www.pastpages.org/screenshot/3495801/
Chicago
"San Francisco Chronicle homepage at Aug. 21, 2017, 6:16 a.m. UTC." PastPages. Last modified August 21, 2017, http://www.pastpages.org/screenshot/3495801/.
Wikipedia
{{cite web
| url = http://www.pastpages.org/screenshot/3495801/
| title = San Francisco Chronicle homepage at Aug. 21, 2017, 6:16 a.m. UTC
| publisher = PastPages
| date = Aug. 21, 2017
| accessdate = Feb. 20, 2019
| ref = {{harvid|PastPages-3495801|2017}}
}}