The indicator uses a time range and another instrument for time reference, so that it works in the time zone you care about. I have set the default to SPX500USD since it is in EST ( SPX , ES and many futures are on Chicago time and opening range gets confused). You can change the reference instrument in the settings.
You can also change the multipliers and use other values instead of 1.272 and 1.618 for Fib extensions.
TradingView has a limit as to how many objects an indicator can create so if you want to go back further for visual backtesting - use the replay tool - it will be able to draw up to the time you selected within its limits.
Since people asked - you can use other time zones by specifying a reference symbol. For example here I used SBRY (from LSX London Stock Exchange) and 9:00 - 10:00 to show London session in EURUSD:
eyitayo123
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Looks interesting, We buy or sell when price gets into the above or bellow boxes right?
asenski
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@eyitayo123, I would not do this blindly, I use other indicators for confirmation. Another way you can use it is using the levels as profit targets.
Backtest and make sure you know what you're doing!
fedexboxes
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Thank you for this indicator. I like being able to choose different time zones.
asenski
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@fedexboxes, the indicator lets you do that by specifying a reference symbol. Perhaps we can do some presets and let you change by selecting 1, 2, 3, etc.
What time zones should I include in future version? London, Asian, what else?
Not sure what is the best symbol to use for Asian though... It's important to use a local symbol so that daylight savings doesn't mess it up.