diff --git a/.gitignore b/.gitignore
index c19dbbc..797d869 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,3 @@
 /XEphem-0a1b50503bdf202fb6fa7ca62124b0242a004e69.tar.gz
 /XEphem-a2da14bfc6727b1255df6f31ac4ce89d4bd881c8.tar.gz
 /XEphem-4.2.0.tar.gz
-/XEphem-4.3.0.tar.gz
diff --git a/sources b/sources
index f2e5be6..e7b97b8 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (XEphem-4.3.0.tar.gz) = c93a946ca457946dba356ac2ef6cada5203b67a29f6788af3cb7b02670ca5fd876c61f4c5daa556036abf129ac50895599fd1e794adb91d07b1b0ca422bc8bb6
+SHA512 (XEphem-4.2.0.tar.gz) = 97756bc299821e95cbc06facc3091795feb245db033193fdf587bcfd7a83142a15552a1f8aa53c040c87cb75021424b94bbed5a747fb9783f5a0cac6fb4ddb3e
diff --git a/xephem-c99.patch b/xephem-c99.patch
new file mode 100644
index 0000000..66107cc
--- /dev/null
+++ b/xephem-c99.patch
@@ -0,0 +1,19 @@
+Define _GNU_SOURCE, so that <time.h> declares strptime, an X/Open
+extension that is not available by default in the glibc headers.
+
+Submitted upstream: <https://github.com/XEphem/XEphem/pull/73>
+
+diff --git a/GUI/xephem/sunmenu.c b/GUI/xephem/sunmenu.c
+index 0bedcff3971e1ec4..62540d396e5ece68 100644
+--- a/GUI/xephem/sunmenu.c
++++ b/GUI/xephem/sunmenu.c
+@@ -1,6 +1,9 @@
+ /* code to manage the sun display 
+  */
+ 
++/* For the declaration of strptime in <time.h>. */
++#define _GNU_SOURCE
++
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <errno.h>
diff --git a/xephem.spec b/xephem.spec
index f806baf..67d006f 100644
--- a/xephem.spec
+++ b/xephem.spec
@@ -1,4 +1,4 @@
-%global gittag 4.3.0
+%global gittag 4.2.0
 #%%global commit a2da14bfc6727b1255df6f31ac4ce89d4bd881c8
 #%%global shortcommit %%(c=%%{commit}; echo ${c:0:7})
 #%%global date 20240205
@@ -31,6 +31,11 @@ Patch:          xephem_makefile.patch
 # Proposed upstream: https://github.com/XEphem/XEphem/pull/60
 Patch:          xephem_with_cmake.patch
 
+# Define _GNU_SOURCE, so that <time.h> declares strptime, an X/Open
+# extension that is not available by default in the glibc headers.
+# Submitted upstream: <https://github.com/XEphem/XEphem/pull/73>
+Patch:          xephem-c99.patch
+
 ExcludeArch:    %{ix86}
 
 BuildRequires:  desktop-file-utils
diff --git a/xephem_with_cmake.patch b/xephem_with_cmake.patch
index e545e15..c6f8208 100644
--- a/xephem_with_cmake.patch
+++ b/xephem_with_cmake.patch
@@ -1,6 +1,33 @@
-diff -U 3 -dHrN a/CMakeLists.txt b/CMakeLists.txt
---- a/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
-+++ b/CMakeLists.txt	2026-03-14 11:05:34.680886726 +0100
+From 59983adbba71b7f0a3b2ce4503e64e3ba7cb2854 Mon Sep 17 00:00:00 2001
+From: Mattia Verga <mattia.verga@tiscali.it>
+Date: Sun, 8 Jan 2023 16:08:24 +0100
+Subject: [PATCH] Add cmake directives
+
+Signed-off-by: Mattia Verga <mattia.verga@tiscali.it>
+---
+ CMakeLists.txt            | 76 +++++++++++++++++++++++++++++++
+ GUI/xephem/CMakeLists.txt | 95 +++++++++++++++++++++++++++++++++++++++
+ libastro/CMakeLists.txt   | 69 ++++++++++++++++++++++++++++
+ libip/CMakeLists.txt      | 26 +++++++++++
+ libjpegd/CMakeLists.txt   | 40 +++++++++++++++++
+ liblilxml/CMakeLists.txt  | 16 +++++++
+ libpng/CMakeLists.txt     | 30 +++++++++++++
+ libz/CMakeLists.txt       | 25 +++++++++++
+ 8 files changed, 377 insertions(+)
+ create mode 100644 CMakeLists.txt
+ create mode 100644 GUI/xephem/CMakeLists.txt
+ create mode 100644 libastro/CMakeLists.txt
+ create mode 100644 libip/CMakeLists.txt
+ create mode 100644 libjpegd/CMakeLists.txt
+ create mode 100644 liblilxml/CMakeLists.txt
+ create mode 100644 libpng/CMakeLists.txt
+ create mode 100644 libz/CMakeLists.txt
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+new file mode 100644
+index 0000000..b618a69
+--- /dev/null
++++ b/CMakeLists.txt
 @@ -0,0 +1,76 @@
 +cmake_minimum_required(VERSION 3.10)
 +
@@ -78,9 +105,11 @@ diff -U 3 -dHrN a/CMakeLists.txt b/CMakeLists.txt
 +        DESTINATION ${XEPHEM_DATADIR})
 +install(DIRECTORY GUI/xephem/lo
 +        DESTINATION ${XEPHEM_DATADIR})
-diff -U 3 -dHrN a/GUI/xephem/CMakeLists.txt b/GUI/xephem/CMakeLists.txt
---- a/GUI/xephem/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
-+++ b/GUI/xephem/CMakeLists.txt	2026-03-14 11:05:34.681033815 +0100
+diff --git a/GUI/xephem/CMakeLists.txt b/GUI/xephem/CMakeLists.txt
+new file mode 100644
+index 0000000..5f86fb8
+--- /dev/null
++++ b/GUI/xephem/CMakeLists.txt
 @@ -0,0 +1,95 @@
 +cmake_minimum_required(VERSION 3.10)
 +
@@ -177,10 +206,12 @@ diff -U 3 -dHrN a/GUI/xephem/CMakeLists.txt b/GUI/xephem/CMakeLists.txt
 +                   WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
 +                   COMMENT "Building manpage"
 +                   VERBATIM)
-diff -U 3 -dHrN a/libastro/CMakeLists.txt b/libastro/CMakeLists.txt
---- a/libastro/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
-+++ b/libastro/CMakeLists.txt	2026-03-14 11:06:44.260765464 +0100
-@@ -0,0 +1,70 @@
+diff --git a/libastro/CMakeLists.txt b/libastro/CMakeLists.txt
+new file mode 100644
+index 0000000..aaa7631
+--- /dev/null
++++ b/libastro/CMakeLists.txt
+@@ -0,0 +1,69 @@
 +cmake_minimum_required(VERSION 3.10)
 +
 +project(libastro C)
@@ -207,7 +238,6 @@ diff -U 3 -dHrN a/libastro/CMakeLists.txt b/libastro/CMakeLists.txt
 +  dbfmt.c
 +  deep.c
 +  deltat.c
-+  eclipses.c
 +  earthsat.c
 +  eq_ecl.c
 +  eq_gal.c
@@ -251,9 +281,11 @@ diff -U 3 -dHrN a/libastro/CMakeLists.txt b/libastro/CMakeLists.txt
 +target_include_directories(astro PUBLIC
 +                           "${CMAKE_CURRENT_BINARY_DIR}"
 +                           "${CMAKE_CURRENT_SOURCE_DIR}")
-diff -U 3 -dHrN a/libip/CMakeLists.txt b/libip/CMakeLists.txt
---- a/libip/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
-+++ b/libip/CMakeLists.txt	2026-03-14 11:05:34.681189843 +0100
+diff --git a/libip/CMakeLists.txt b/libip/CMakeLists.txt
+new file mode 100644
+index 0000000..3d7ac78
+--- /dev/null
++++ b/libip/CMakeLists.txt
 @@ -0,0 +1,26 @@
 +cmake_minimum_required(VERSION 3.10)
 +
@@ -281,9 +313,11 @@ diff -U 3 -dHrN a/libip/CMakeLists.txt b/libip/CMakeLists.txt
 +target_include_directories(ip PUBLIC
 +                           "${CMAKE_CURRENT_BINARY_DIR}"
 +                           "${CMAKE_CURRENT_SOURCE_DIR}")
-diff -U 3 -dHrN a/libjpegd/CMakeLists.txt b/libjpegd/CMakeLists.txt
---- a/libjpegd/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
-+++ b/libjpegd/CMakeLists.txt	2026-03-14 11:05:34.681320833 +0100
+diff --git a/libjpegd/CMakeLists.txt b/libjpegd/CMakeLists.txt
+new file mode 100644
+index 0000000..7e4ced4
+--- /dev/null
++++ b/libjpegd/CMakeLists.txt
 @@ -0,0 +1,40 @@
 +cmake_minimum_required(VERSION 3.10)
 +
@@ -325,9 +359,11 @@ diff -U 3 -dHrN a/libjpegd/CMakeLists.txt b/libjpegd/CMakeLists.txt
 +target_include_directories(jpegd PUBLIC
 +                           "${CMAKE_CURRENT_BINARY_DIR}"
 +                           "${CMAKE_CURRENT_SOURCE_DIR}")
-diff -U 3 -dHrN a/liblilxml/CMakeLists.txt b/liblilxml/CMakeLists.txt
---- a/liblilxml/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
-+++ b/liblilxml/CMakeLists.txt	2026-03-14 11:05:34.681428772 +0100
+diff --git a/liblilxml/CMakeLists.txt b/liblilxml/CMakeLists.txt
+new file mode 100644
+index 0000000..6abc3cb
+--- /dev/null
++++ b/liblilxml/CMakeLists.txt
 @@ -0,0 +1,16 @@
 +cmake_minimum_required(VERSION 3.10)
 +
@@ -345,9 +381,11 @@ diff -U 3 -dHrN a/liblilxml/CMakeLists.txt b/liblilxml/CMakeLists.txt
 +target_include_directories(lilxml PUBLIC
 +                           "${CMAKE_CURRENT_BINARY_DIR}"
 +                           "${CMAKE_CURRENT_SOURCE_DIR}")
-diff -U 3 -dHrN a/libpng/CMakeLists.txt b/libpng/CMakeLists.txt
---- a/libpng/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
-+++ b/libpng/CMakeLists.txt	2026-03-14 11:05:34.681501601 +0100
+diff --git a/libpng/CMakeLists.txt b/libpng/CMakeLists.txt
+new file mode 100644
+index 0000000..abacd7b
+--- /dev/null
++++ b/libpng/CMakeLists.txt
 @@ -0,0 +1,30 @@
 +cmake_minimum_required(VERSION 3.10)
 +
@@ -379,9 +417,11 @@ diff -U 3 -dHrN a/libpng/CMakeLists.txt b/libpng/CMakeLists.txt
 +target_include_directories(png PUBLIC
 +                           "${CMAKE_CURRENT_BINARY_DIR}"
 +                           "${CMAKE_CURRENT_SOURCE_DIR}")
-diff -U 3 -dHrN a/libz/CMakeLists.txt b/libz/CMakeLists.txt
---- a/libz/CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
-+++ b/libz/CMakeLists.txt	2026-03-14 11:05:34.681573741 +0100
+diff --git a/libz/CMakeLists.txt b/libz/CMakeLists.txt
+new file mode 100644
+index 0000000..1294b70
+--- /dev/null
++++ b/libz/CMakeLists.txt
 @@ -0,0 +1,25 @@
 +cmake_minimum_required(VERSION 3.10)
 +