When does GBP/USD actually rise?

Every hour below is a real measurement: how often GBP/USD closed higher than it opened in that hour of the week, across 124,884 hourly bars. Not signals — base rates, with the sample size on every figure.

The strongest and weakest hours

Averaged across the trading week, the hour that has leaned up hardest is 01:00 UTC — GBP/USD closed higher 53.0% of 5,205 times there, far enough from a coin flip to be beyond chance. The weakest is 20:00 UTC, closing higher only 45.4% of 5,203 times.

Hour × weekday, the whole picture

Colour is the up-rate — red leaned down, teal leaned up. The brass dot marks buckets whose lean is statistically beyond chance at |z|≥3. Most cells have no dot. That is the honest shape of the market: mostly noise, with a few stubborn corners.

The three most stubborn corners of the grid:

• Friday 20:00 UTC — closed lower 59.0% of 1,041 times (z=-5.8)
• Sunday 21:00 UTC — closed higher 59.8% of 737 times (z=5.3) · rollover hour, see note above
• Monday 20:00 UTC — closed lower 56.5% of 1,040 times (z=-4.2)

Days and seasons

Wednesday has been the friendliest day (50.3% of 24,922), Friday the least (49.1%). By calendar month, April leads at 50.5% and August trails at 49.2% — month buckets carry roughly a twelfth of the sample each, so hold them more loosely than the hourly figures.

Did any of it survive a real backtest?

Colours are description. A different question is whether a simple rule built on them — enter at the open of a bucket, exit at its close, pay a realistic spread — would have made money, and kept making it on data it was never fitted to. We ran that test across 5,086 rules on the whole board: 307 finished net positive, and only 214 survived the held-out final third of the history.

5 of those survivors run on GBP/USD. The strategy board lists every one — including the losers, because a leaderboard that only shows winners is lying by omission.

Watch it live

These are the same numbers, updating as each hour begins — free to embed on your own site from the widget builder:

Read it without fooling yourself

• The percentage is the headline, not the story. 53.0% from 5,205 samples is information; the same figure from 40 samples is noise. Every number here carries its n.
• The dots matter more than the colours. A vivid cell with no dot is well inside what chance produces.
• Direction is free; getting paid is not. A reliable lean smaller than your spread costs more than it earns.
• These are frequencies, not forecasts. 17 years of "usually" contains every kind of "except when".

The guide walks through all four traps with live numbers.