Which day in the week does the Summer Update usually take place?

Question

What would be the most common days of the week that CipSoft tends to pick as the one to launch a Summer Update? Thanks!

Answer 1

Summer Updates from 2001 to 2019:

•  Update 6.2, June 10, 2001 (Sunday)
• Update 7.0, August 28, 2002 (Wednesday)
• Update 7.11, June 27, 2003 (Friday)
• Update 7.3, August 11, 2004 (Wednesday)
• Update 7.5, August 9, 2005 (Tuesday)
• Update 7.8, August 1, 2006 (Tuesday)
• Update 8.0, June 26, 2007 (Tuesday)
• Update 8.2, July 2, 2008 (Wednesday)
• Update 8.5, July 1, 2009 (Wednesday)
• Update 8.6, June 30, 2010 (Wednesday)
• Update 9.1, July 6, 2011 (Wednesday)
• Update 9.60, July 11, 2012 (Wednesday)
• Update 10.10, July 17, 2013 (Wednesday) - Part I
• Update 10.20, September 18, 2013 (Wednesday) - Part II
• Update 10.50, July 7, 2014 (Monday)
• Update 10.80, July 21, 2015 (Tuesday)
• Update 10.94, May 31, 2016 (Tuesday)
• Update 11.40, July 25, 2017 (Tuesday)
• Update 11.80, July 03, 2018 (Tuesday)
• Update 12.20, July 29, 2019 (Monday) 

Times per day.

Monday: 2 Times

Tuesday: 7 Times

Wednesday: 9 Times

Thursday: 0 Time

Friday: 1 Time

Saturday: 0 Time

Sunday: 1 Time

Source: Updates (Tibia Fandom)

Answer 2

I looked through the dates of past updates on https://tibia.fandom.com/wiki/Updates

Assuming I counted correctly the update has occurred:

• 9 times on a Wednesday
• 7 times on a Tuesday
• 3 times on a Monday
• 1 time on a Friday

Interestingly enough CIP seems to have been shifting the days. From 2008-2015~ both Summer and Winter updates generally fell on Wednesdays. Then 2015-2018 updates occurred on Tuesdays. Now since that date the last 3 major game updates have occurred on a Monday.

Comments

I think you have a little mistake:
Update 6.2, June 10, 2001
Sunday not Monday.
So +1 to Sunday and -1 to Monday.