diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..496ee2ca6a2f08396a4076fe43dedf3dc0da8b6d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.DS_Store
\ No newline at end of file
diff --git a/reloj.py b/reloj.py
new file mode 100644
index 0000000000000000000000000000000000000000..9d692e8777d0726c980b5de21c69b4e28b2ca710
--- /dev/null
+++ b/reloj.py
@@ -0,0 +1,24 @@
+import PySimpleGUI as sg
+import datetime
+import time
+
+layout = [
+    [sg.Text(size=(15,1), key='-OUTPUT-')],      
+    [sg.Exit()]
+    ]      
+
+window = sg.Window('Ventana').layout(layout)      
+
+counter = 0
+
+while True:      
+    event, values = window.read(timeout=10)
+    # acualizar tiempo cada 10 milesimas de segundo
+    window['-OUTPUT-'].update(
+        '{:02d}:{:02d}.{:02d}'.format((counter // 100) // 60, (counter // 100) % 60, counter % 100))
+    counter += 1
+
+    if event is None or event == 'Exit':      
+        break      
+
+window.Close()
\ No newline at end of file