This is quite an interesting topic. I was discussing this in a training session and there were several issues that came up. Now, the main subject is that matching multiple timeframes by their ratio is not constant across different markets. For example, there is the famous "factor of five" that states a normal relationship between time frames would be to multiply each time frame by 5, meaning weekly = 5 x daily so you get a weekly/daily time frame combination. hourly = 5 x 12 minutes so you get an hourly/12 minutes combo. These ones are pretty clear BUT IN BETWEEN THEM the nature of the market traded takes its toll: With what do you match a daily chart? Daily = approx 5 x 4 hour chart so you get a daily/4hour combo HOWEVER, there are only 8 hours during the day! So you basically have a 5:1 realtionship in time but a 2:1 relationship in trading periods. Ok, let's try something else then: Daily = approx 5 x 2hours Now we have a 12:1 relationship in time and an approximately 5:1 relationship in trading periods. But what if you were trading a 24 hour market? Then you would really have a 12:1 both in time and trading periods. I am curious of your opinions on what is the best ratio (if there is one) that would fit a wide range of market types.