diff --git a/bit_manipulation/timer.py b/bit_manipulation/timer.py
new file mode 100644
index 000000000000..a96262a96903
--- /dev/null
+++ b/bit_manipulation/timer.py
@@ -0,0 +1,9 @@
+import time
+set_time=int(input("enter the time"))
+for i in range(set_time,0,-1):
+     second=i%60
+     minuit=int(i/60)%60
+     hour=int(i/3600)
+     print(f"{hour:02}:{minuit:02}:{second:02}")
+     time.sleep(1)
+print("your time is over")     
\ No newline at end of file