Fibonacci numbers can be applied to anything...I personally haven't found FIB time lines advantageous to my way of trading...same goes with Gann's stuff. I suppose some trader's may find them useful.
My shortest "time frame" would be approximately 15 minutes of bars on a chart... I use Tick charts mainly - they minimise the affects of "time" in favor of activity levels... That said, the smallest increment I use is 30 ticks...meaning it takes 30 trades to complete one bar (for the YM, NQ and RUT e-minis) The ES e-mini is very much more active - my smallest interval is 120 ticks per bar.
I describe the differences in Tick and Time based charts in depth about half way down the page on my blog: Discretionary Trading ...TICK vs TIME charts (my blog page number 7) ...
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.