Update app.py

app.py

@@ -104,7 +104,7 @@ def predict(prompt, guidance, steps, seed=1231231):
     #filename = f"{date_str}_{safe_prompt}.png"
 
     central = pytz.timezone('US/Central')
-    safe_date_time = datetime.now(central).strftime("%m%d_%H%M")
+    safe_date_time = datetime.datetime.now().strftime("%Y%m%d")
     replaced_prompt = prompt.replace(" ", "_").replace("\n", "_")
     safe_prompt = "".join(x for x in replaced_prompt if x.isalnum() or x == "_")[:90]
     filename = f"{safe_date_time}_{safe_prompt}.png"