--- mutt-old/Muttrc
+++ mutt-new/Muttrc
@@ -416,11 +416,11 @@
 # ``$save_name'', ``$force_name'' and ``fcc-hook''.
 # 
 # 
-# set date_format="!%a, %b %d, %Y at %I:%M:%S%p %Z"
+# set date_format="!%Y-%m-%d %H:%M:%S %Z"
 #
 # Name: date_format
 # Type: string
-# Default: "!%a, %b %d, %Y at %I:%M:%S%p %Z"
+# Default: "!%Y-%m-%d %H:%M:%S %Z"
 # 
 # 
 # This variable controls the format of the date printed by the ``%d''
@@ -1151,11 +1151,11 @@
 # change this value, as it tends to agitate the more fanatical netizens.
 # 
 # 
-# set index_format="%4C %Z %{%b %d} %-15.15L (%4l) %s"
+# set index_format="%4C %Z %[%Y-%m-%d] %-15.15L (%4l) %s"
 #
 # Name: index_format
 # Type: string
-# Default: "%4C %Z %{%b %d} %-15.15L (%4l) %s"
+# Default: "%4C %Z %[%Y-%m-%d] %-15.15L (%4l) %s"
 # 
 # 
 # This variable allows you to customize the message index display to
--- mutt-old/init.h
+++ mutt-new/init.h
@@ -346,7 +346,7 @@
   ** will be saved for later references.  Also see ``$$record'',
   ** ``$$save_name'', ``$$force_name'' and ``$fcc-hook''.
   */
-  { "date_format",	DT_STR,	 R_BOTH, UL &DateFmt, UL "!%a, %b %d, %Y at %I:%M:%S%p %Z" },
+  { "date_format",	DT_STR,	 R_BOTH, UL &DateFmt, UL "!%Y-%m-%d %H:%M:%S %Z" },
   /*
   ** .pp
   ** This variable controls the format of the date printed by the ``%d''
@@ -844,7 +844,7 @@
   { "indent_str",	DT_SYN,  R_NONE, UL "indent_string", 0 },
   /*
   */
-  { "index_format",	DT_STR,	 R_BOTH, UL &HdrFmt, UL "%4C %Z %{%b %d} %-15.15L (%4l) %s" },
+  { "index_format",	DT_STR,	 R_BOTH, UL &HdrFmt, UL "%4C %Z %[%Y-%m-%d] %-15.15L (%4l) %s" },
   /*
   ** .pp
   ** This variable allows you to customize the message index display to