diff --git a/solutions/rust/gigasecond/1/src/lib.rs b/solutions/rust/gigasecond/1/src/lib.rs
new file mode 100644
index 0000000..64f4397
--- /dev/null
+++ b/solutions/rust/gigasecond/1/src/lib.rs
@@ -0,0 +1,7 @@
+use time::PrimitiveDateTime as DateTime;
+use std::time::Duration;
+
+// Returns a DateTime one billion seconds after start.
+pub fn after(start: DateTime) -> DateTime {
+    start + Duration::from_secs(1000000000)
+}