diff --git a/cli/arvelie/arvelie.tal b/cli/arvelie/arvelie.tal
index db4f3e3..c0e34eb 100644
--- a/cli/arvelie/arvelie.tal
+++ b/cli/arvelie/arvelie.tal
@@ -35,7 +35,6 @@ BRK
 
 	POP
 	.buf parse
-	#010e DEO
 
 BRK
 
@@ -59,7 +58,7 @@ JMP2r
 	( date ) INC LDZ2 bytedec STH2r ADD2 INC2
 	( year ) ROT LDZ2 bytedec #07d6 ADD2
 	emit-gre
-	#010f DEO
+	#800f DEO
 
 JMP2r
 
@@ -74,14 +73,27 @@ JMP2r
 	( day )
 	STHr LDZ2 bytedec #0001 SUB2
 	doty SWP2 emit-arv #0a18 DEO
-	#010f DEO
+	#800f DEO
 
 JMP2r
 
 @emit-gre ( doty* year* -- )
 
-	pdec #2018 DEO
-	pdec #0a18 DEO
+	DUP2 pdec LIT "- #18 DEO
+	,&y STR2
+	STH2
+	#0c00
+	&l
+		DUP [ LIT2 &y $2 ] ROT diam #00 SWP
+			DUP2 STH2kr GTH2 ?&skip
+				STH2k SUB2r !&continue
+				&skip
+			POP2 !&end
+		&continue
+			POP2
+		INC GTHk ?&l
+	&end
+	NIP INC emit-dec LIT "- #18 DEO STH2r NIP emit-dec #0a18 DEO
 
 JMP2r
 
@@ -98,7 +110,14 @@ JMP2r
 
 @emit-num ( num -- )
 
-	#30 ADD #18 DEO
+	LIT "0 ADD #18 DEO
+
+JMP2r
+
+@emit-dec ( byte -- )
+
+	DUP #0a DIV emit-num
+	#0a DIVk MUL SUB emit-num
 
 JMP2r
 
diff --git a/cli/arvelie/build.sh b/cli/arvelie/build.sh
index a3794c3..31460d4 100755
--- a/cli/arvelie/build.sh
+++ b/cli/arvelie/build.sh
@@ -7,7 +7,7 @@ LIN="uxncli $HOME/roms/uxnlin.rom"
 SRC="${ID}.tal"
 DST="${ID}.rom"
 CPY="$HOME/roms"
-ARG="2023-05-25"
+ARG=""
 
 if [[ "$*" == *"--lint"* ]]
 then
@@ -21,5 +21,10 @@ then
 	cp $DST $CPY
 fi
 
-$EMU $DST $ARG
+echo "today: "
+$EMU $DST
+echo "gre->arv: "
+$EMU $DST "2023-05-25"
+echo "arv->gre: "
+$EMU $DST "17K04"