Update comments for new URL of Simon Taylor's GPO Clock Systems site

diff --git a/clunk.c b/clunk.c
index 1bd3ecdfaabafd37085ff9738e0b82e2e6cfe69b..a19fc0a661feeb6bdcb0d6a2e7ab6f150f99db70 100644 (file)
--- a/clunk.c
+++ b/clunk.c
@@ -16,7 +16,7 @@
  * Post Office Specification PR 479C requires a pulse length of
  * 200-500 ms.
  *
- * <http://gpoclocksystems.byethost22.com/pages/pr479b.html>
+ * <https://www.lightstraw.uk/gpo/clocksystems/pages/pr479b.html>
  */
 static long const pulsewidth = 200000000; /* nanoseconds */
 
@@ -35,7 +35,7 @@ static long const gapwidth = 500000000; /* nanoseconds */
  * the end of summer time is done by stopping, in accordance with Post
  * Office Engineering Instruction B 5301, Issue 7.
  *
- * <http://gpoclocksystems.byethost22.com/pages/b5301.html>
+ * <https://www.lightstraw.uk/gpo/clocksystems/pages/b5301.html>
  */
 static int const maxadvance = (10 * 3600) + (50 * 60);