diff -upr screen-4.0.3.orig/doc/screen.1 screen-4.0.3/doc/screen.1
--- screen-4.0.3.orig/doc/screen.1	2003-12-05 08:51:57.000000000 -0500
+++ screen-4.0.3/doc/screen.1	2007-03-21 19:08:57.000000000 -0400
@@ -3266,6 +3266,8 @@ either 'AM' or 'PM'
 current time HH:MM in 24h format
 .IP C
 current time HH:MM in 12h format
+.IP j
+Julian day number
 .IP d
 day number
 .IP D
diff -upr screen-4.0.3.orig/doc/screen.texinfo screen-4.0.3/doc/screen.texinfo
--- screen-4.0.3.orig/doc/screen.texinfo	2003-12-05 08:51:46.000000000 -0500
+++ screen-4.0.3/doc/screen.texinfo	2007-03-21 19:09:10.000000000 -0400
@@ -4732,6 +4732,8 @@ either @code{AM} or @code{PM}
 current time @code{HH:MM} in 24h format
 @item C
 current time @code{HH:MM} in 12h format
+@item j
+Julian day number
 @item d
 day number
 @item D
diff -upr screen-4.0.3.orig/screen.c screen-4.0.3/screen.c
--- screen-4.0.3.orig/screen.c	2003-09-08 10:26:41.000000000 -0400
+++ screen-4.0.3/screen.c	2007-03-21 19:08:44.000000000 -0400
@@ -2394,7 +2394,7 @@ int rec;
 	    }
 	  break;
 	case 'd': case 'D': case 'm': case 'M': case 'y': case 'Y':
-	case 'a': case 'A': case 's': case 'c': case 'C':
+	case 'a': case 'A': case 's': case 'c': case 'C': case 'j':
 	  if (l < 4)
 	    break;
 	  if (tm == 0)
@@ -2453,6 +2453,9 @@ int rec;
 	      if (!tick || tick > 60)
 		tick = 60;
 	      break;
+	    case 'j':
+	      sprintf(p, "%03d", tm->tm_yday + 1);
+	      break;
 	    default:
 	      break;
 	    }