diff --git a/libcxx/docs/Status/SpaceshipProjects.csv b/libcxx/docs/Status/SpaceshipProjects.csv
--- a/libcxx/docs/Status/SpaceshipProjects.csv
+++ b/libcxx/docs/Status/SpaceshipProjects.csv
@@ -166,12 +166,12 @@
 | `[time.cal.mwdlast] <https://wg21.link/time.cal.mwdlast>`_
 | `[time.cal.ymwd] <https://wg21.link/time.cal.ymwd>`_
 | `[time.cal.ymwdlast] <https://wg21.link/time.cal.ymwdlast>`_","| `weekday`
-| `weekday_indexed`
-| `weekday_last`
-| `month_weekday`
-| `month_weekday_last`
-| `year_month_weekday`
-| `year_month_weekday_last`",None,Unassigned,|Not Started|
+| `weekday_indexed <https://reviews.llvm.org/D130859>`_
+| `weekday_last <https://reviews.llvm.org/D130859>`_
+| `month_weekday <https://reviews.llvm.org/D130859>`_
+| `month_weekday_last <https://reviews.llvm.org/D130859>`_
+| `year_month_weekday <https://reviews.llvm.org/D130859>`_
+| `year_month_weekday_last`",None,Hristo Hristov,|Complete|
 "| `[time.zone.nonmembers] <https://wg21.link/time.zone.nonmembers>`_
 | `[time.zone.zonedtime.nonmembers] <https://wg21.link/time.zone.zonedtime.nonmembers>`_
 | `[time.zone.leap.nonmembers] <https://wg21.link/time.zone.leap.nonmembers>`_
diff --git a/libcxx/include/chrono b/libcxx/include/chrono
--- a/libcxx/include/chrono
+++ b/libcxx/include/chrono
@@ -390,7 +390,7 @@
 class weekday;
 
 constexpr bool operator==(const weekday& x, const weekday& y) noexcept;
-constexpr bool operator!=(const weekday& x, const weekday& y) noexcept;
+constexpr bool operator!=(const weekday& x, const weekday& y) noexcept;                 // removed in C++20
 constexpr weekday operator+(const weekday& x, const days&    y) noexcept;
 constexpr weekday operator+(const days&    x, const weekday& y) noexcept;
 constexpr weekday operator-(const weekday& x, const days&    y) noexcept;
@@ -403,7 +403,7 @@
 
 class weekday_indexed;
 constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept;
-constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept;
+constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept; // removed in C++20
 
 template<class charT, class traits>
   basic_ostream<charT, traits>&
@@ -413,7 +413,7 @@
 class weekday_last;
 
 constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept;
-constexpr bool operator!=(const weekday_last& x, const weekday_last& y) noexcept;
+constexpr bool operator!=(const weekday_last& x, const weekday_last& y) noexcept;       // removed in C++20
 
 template<class charT, class traits>
   basic_ostream<charT, traits>&
@@ -443,7 +443,7 @@
 class month_weekday;
 
 constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept;
-constexpr bool operator!=(const month_weekday& x, const month_weekday& y) noexcept;
+constexpr bool operator!=(const month_weekday& x, const month_weekday& y) noexcept;           // removed in C++20
 
 template<class charT, class traits>
   basic_ostream<charT, traits>&
@@ -453,7 +453,7 @@
 class month_weekday_last;
 
 constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept;
-constexpr bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept;
+constexpr bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept; // removed in C++20
 
 template<class charT, class traits>
   basic_ostream<charT, traits>&
@@ -524,7 +524,7 @@
 constexpr bool operator==(const year_month_weekday& x,
                           const year_month_weekday& y) noexcept;
 constexpr bool operator!=(const year_month_weekday& x,
-                          const year_month_weekday& y) noexcept;
+                          const year_month_weekday& y) noexcept;                  // removed in C++20
 
 constexpr year_month_weekday
   operator+(const year_month_weekday& ymwd, const months& dm) noexcept;
@@ -549,7 +549,7 @@
 constexpr bool operator==(const year_month_weekday_last& x,
                           const year_month_weekday_last& y) noexcept;
 constexpr bool operator!=(const year_month_weekday_last& x,
-                          const year_month_weekday_last& y) noexcept;
+                          const year_month_weekday_last& y) noexcept;             // removed in C++20
 constexpr year_month_weekday_last
   operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
 constexpr year_month_weekday_last