[Bugfix] Move the current time box to the bottom between 6:00 and 18:00

Instead of 7:00 and 17:00; it was’t *that bad the old way, but it’s more balanced this way.

src/main.rs

@@ -557,7 +557,7 @@ fn gen_svg() -> Document {
             local_hour, local_minute, local_second
         )));
 
-    let top_pos = if local_hour > 6 && local_hour < 18 {
+    let top_pos = if (6..=18).contains(&local_hour) {
         moon_radius * 1.5 // under the moon
     } else {
         0.0 - moon_radius * 1.5 - current_box_height // above the moon