Billions of phones run on code looked after by a handful of people. We counted them from the code itself.
Teaches computer science at UCLA, and has been the official coordinator of the time zone file since 2012.
Android phones and iPhones use his file. We didn't count servers, Macs or laptops, which would push the number higher.
On 29 September Paul put out version 2026e of the file. The first line of its notes says that Manitoba moves to permanent -05 on 31 October, which tells phones in Winnipeg not to set their clocks back on 1 November, and it was typed in by two volunteers a month ahead. Of the 251 changes made to the file in the last year, 218 were his and 28 were Tim Parenti's.
