commit 0c00ddc1b37a57cb2fd0d39e522c283df223f3ec Author: Ee Durbin Date: Sat May 17 05:13:44 2025 -0400 Define Etc/PyConUS diff --git a/etcetera b/etcetera index 948531c8..b611f85b 100644 --- a/etcetera +++ b/etcetera @@ -81,3 +81,92 @@ Zone Etc/GMT+9 -9 - %z Zone Etc/GMT+10 -10 - %z Zone Etc/GMT+11 -11 - %z Zone Etc/GMT+12 -12 - %z + +# PyCon US Time + +# From Ee Durbin (2025-05-17): +# PyCon US is an annual gathering for the community using and developing +# the open-source Python programming language. +# +# PyCon US has been held in-person and on-location from 2003 to present +# with exception for 2020 and 2021 in response to the global COVID-19 pandemic. +# After an initial three year stint in Washington, D.C. USA, PyCon US has +# been hosted in cities across North America in two-year "cycles". +# +# PyCon US makes extensive use of software across an annoying number of +# online and offline systems. These include GNU/Linux servers, PostgreSQL +# databases, all web browsers, a mobile application, Raspberry Pis, iPads, +# Zebra printers, printed materials, and human brain matter. These systems +# persist year-over-year while our timezone does not. This timezone is proposed +# to provide a durable solution for ensuring agreement between these systems. +# +# Establishment of this timezone will benefit me directly, as well as those +# who proceed me by reducing churn in our codebases, and entirely obliviate +# the need to think during stressful periods of conference planning. It will +# also benefit my co-workers and those who follow them by dissolving an +# unnecessary cognitive burden when editing records in our systems, +# communicating deadlines and schedules, and working with one another +# remotely. It will also benefit attendees in reasoning about these matters. +# +# PyCon US Time is defined to be the local time of the city currently hosting +# the conference. PyCon US Time transitions at the time that last attendee +# (Larry Hastings, most often) departs the Development Sprints. +# We are actively working to improve the historic times for this departure, +# but estimate 8pm local time for years which have not been fully verified. +# +# Transitions +# =========== +# +# 2003-02-13 First Annual PyCon announced +# - Reference: https://www.python.org/psf/press-release/pr20030213/ +# - Location: Washington DC, USA, -5:00 +# 2005-03-25 PyCon US Washington concludes +# - New Location: Dallas, TX, USA, -6:00 +# - Last Attendee Departure: Unconfirmed +# 2007-03-01 PyCon US Dallas concludes +# - New Location: Chicago, IL, USA, -6:00 +# - Last Attendee Departure: Unconfirmed +# 2009-04-02 PyCon US Chicago concludes +# - New Location: Atlanta, GA, USA, -5:00 +# - Last Attendee Departure: Unconfirmed +# 2011-03-17 PyCon US Atlanta concludes +# - New Location: Santa Clara, CA, USA, -8:00 +# - Last Attendee Departure: Unconfirmed +# 2013-03-21 PyCon US Santa Clara concludes +# - New Location: Montréal, Québec, Canada, -5:00 +# - Last Attendee Departure: Unconfirmed +# 2015-04-16 PyCon US Montréal concludes +# - New Location: Portland OR, USA, -8:00 +# - Last Attendee Departure: Unconfirmed +# 2015-04-16 PyCon US Portland concludes +# - New Location: Cleveland, OH, USA, -5:00 +# - Last Attendee Departure: 7:59pm local time +# 2015-04-16 PyCon US Cleveland concludes +# - New Location: Worldwide, 0:00 +# - Last Attendee Departure: Unconfirmed +# - Reference: https://x.com/pycon/status/1126637785455185920 +# - Note: After PyCon US 2019, the planned conference cycle +# in Pittsburgh, PA, USA was undertaken on-line for 2020/2021. +# 2021-10-12 PyCon US Salt Lake City Launched +# - New Location: Salt Lake City, UT, USA, -7:00 +# - Reference: https://pycon.blogspot.com/2021/10/pycon-us-2022-website-and-sponsorship.html +# 2023-04-27 PyCon US Salt Lake City concludes +# - New Location: Pittsburgh, PA, USA, -5:00 +# - Last Attendee Departure: Unconfirmed +# 2025-05-22 PyCon US Pittsburgh concludes (Estimated) +# - New Location: Long Beach, CA, USA, -8:00 + +# Zone NAME STDOFF RULES FORMAT [UNTIL] +Zone Etc/PyConUS 0 - -00 2003 Feb 13 0:00 + -5:00 US E%sT 2005 Mar 25 20:00 + -6:00 US C%sT 2007 Mar 1 20:00 + -6:00 US C%sT 2009 Apr 2 20:00 + -5:00 US E%sT 2011 Mar 17 20:00 + -8:00 US P%sT 2013 Mar 21 20:00 + -5:00 Canada E%sT 2015 Apr 16 20:00 + -8:00 US P%sT 2017 May 21 20:00 + -5:00 US E%sT 2019 May 9 19:59 + -0:00 - UTC 2021 Oct 12 12:00 + -7:00 US M%sT 2023 Apr 27 20:00 + -5:00 US E%sT 2025 May 22 20:00 + -8:00 US P%sT