tweak readme with meeting time

Author: nikomatsakis

README.md

@@ -57,15 +57,15 @@ stream.
 
 [Zulip]: https://rust-lang.zulipchat.com/#narrow/stream/136281-wg-unsafe-code-guidelines
 
-Every two weeks, we hold a brief, non-technical meeting to decide
-whether to keep the current area of discussion or to adopt a new
-one. Prior to this meeting, we update the "area of discussion"
-document with summaries of the threads. The meeting takes place on
-[Zulip] and all are welcome to attend.
+Every two weeks on Thursday at 9:00 UTC+4, we hold a brief,
+non-technical meeting to decide whether to keep the current area of
+discussion or to adopt a new one. Prior to this meeting, we update the
+"area of discussion" document with summaries of the threads. The
+meeting takes place on [Zulip] and all are welcome to attend.
 
 A more complete description of our process can be found in [the `process.md` file][p].
 
-[p]: 
+[p]: process.md
 
 ## See also