diff --git a/examples/frontend/test_std_physics.sg b/examples/frontend/test_std_physics.sg
index 1b358c64..c6974f95 100644
--- a/examples/frontend/test_std_physics.sg
+++ b/examples/frontend/test_std_physics.sg
@@ -9,8 +9,6 @@ fun main() {
     d.print();
     println();
 
-    let instant = Instant.from_date(d);
-
     for let mut i=0; i<8; i+=1; {
         let planet = Planet.PLANETS[i];
         print("Planet: ");
@@ -27,11 +25,15 @@ fun main() {
 
         println(
             "Position (meters, Sun relative): ",
-            convert_to_int(planet.position_at_instant(instant))
+            convert_to_int(planet.position_on_date(d).convert(au_to_m))
         );
     }
 }
 
+fun au_to_m(au: Float): Float {
+    au * 149597870700.7
+}
+
 fun convert_to_int(x: Point3D): {x: Int, y: Int, z: Int} {
     {x=x.x as Int, y=x.y as Int, z=x.z as Int}
 }
diff --git a/examples/test-output/test_std_physics.txt b/examples/test-output/test_std_physics.txt
index 3e3457c5..c83dfc4b 100644
--- a/examples/test-output/test_std_physics.txt
+++ b/examples/test-output/test_std_physics.txt
@@ -1,17 +1,17 @@
 On 2024-9-18
 Planet: Mercury
-Position (meters, Sun relative): {x=33383204033, y=35761196060, z=17482615609}
+Position (meters, Sun relative): {x=-31643647898, y=32191865528, z=20458410057}
 Planet: Venus
-Position (meters, Sun relative): {x=11027909171, y=108447650387, z=818212376}
+Position (meters, Sun relative): {x=-46501068354, y=-90290675415, z=-37680336395}
 Planet: Earth
-Position (meters, Sun relative): {x=135085714027, y=-4079248623, z=57523897417}
+Position (meters, Sun relative): {x=149854530247, y=-10637234519, z=-4611807541}
 Planet: Mars
-Position (meters, Sun relative): {x=-183253301950, y=87942739441, z=-89682031118}
+Position (meters, Sun relative): {x=123729030443, y=169141485920, z=74236731803}
 Planet: Jupiter
-Position (meters, Sun relative): {x=365041661741, y=-617809226669, z=198651062155}
+Position (meters, Sun relative): {x=280695820756, y=646680298840, z=270373647406}
 Planet: Saturn
-Position (meters, Sun relative): {x=-779145757340, y=-1201641044586, z=-261550590693}
+Position (meters, Sun relative): {x=1403304029894, y=-306422538267, z=-186954485413}
 Planet: Uranus
-Position (meters, Sun relative): {x=1645995896811, y=-2256125631718, z=896288551314}
+Position (meters, Sun relative): {x=1722593095389, y=2173366890976, z=927492758434}
 Planet: Neptune
-Position (meters, Sun relative): {x=-1192938488445, y=-4305878018189, z=-196045534921}
+Position (meters, Sun relative): {x=4366845262214, y=-837504145712, z=-451460391989}