diff --git a/royalnet/utils/sleepuntil.py b/royalnet/utils/sleepuntil.py
new file mode 100644
index 00000000..7b6189cb
--- /dev/null
+++ b/royalnet/utils/sleepuntil.py
@@ -0,0 +1,10 @@
+import asyncio
+import datetime
+
+
+async def sleep_until(dt: datetime.datetime):
+    now = datetime.datetime.now()
+    if now > dt:
+        return
+    delta = dt - now
+    await asyncio.sleep(delta.total_seconds())