Merge branch 'release-time' into 'master'

set the release time

See merge request !1843

doc/release/monthly.md

@@ -71,9 +71,14 @@ Xth: (1 working day before the 22nd)
 - [ ] Update GitLab.com with the stable version (#LINK)
 - [ ] Update ci.gitLab.com with the stable version (#LINK)
 
-22nd:
+22nd before 12AM CET:
+
+Release before 12AM CET / 3AM PST, to make sure the majority of our users
+get the new version on the 22nd and there is sufficient time in the European
+workday to quickly fix any issues.
 
 - [ ] Release CE, EE and CI (#LINK)
+- [ ] Schedule a second tweet of the release announcement at 6PM CET / 9AM PST
 
 ```