95% of the time you should be using a 1D or daily timeframe when scanning through your charts. A 1D chart means that every candlestick represents one trading day.
Once you identify a trade idea, it is good practice to shrink your timeframe to identify good entry levels. I prefer a 195, 65, or 15-minute timeframes for this exercise.
Once you have identified your trading plan, you can shrink the timeframe again to 15, 5, and 3-minute timeframes to enter and manage trades intraday.