Change to the Silver meeting time for the meeting of 4 May 2021

We will be meeting jointly with the Accessibility Guidelines Working 
Group on Tuesday 4 May to work through issues raised in the joint 
meeting of 29 April 2021.  Convert start time of 11:00 Boston to your 
local time 
<https://www.timeanddate.com/worldclock/fixedtime.html?iso=20210430T110000&p1=43>. 


Watching out for meeting burnout, it seemed like a better idea for us to 
cancel the Silver meeting and invite everyone to attend the AGWG meeting 
90 minutes later.  This is a two hour meeting. Hopefully, most of you 
can attend.  Although this is a one-time change, I think we should 
evaluate whether and when we may want this to be a more permanent change.

There is a survey for the meeting and an agenda will be sent to the 
Silver and the AG lists.  I didn't see it for this email, but I wanted 
to get the word out early, as I know some people will find it difficult 
to change schedule.

Conference Call information
<https://www.w3.org/2017/08/telecon-info_ag>

IRC for minutes and notes is at irc.w3.org <irc://irc.w3.org/ag> on 
channel #ag.