How to Find Your Worst Trading Hours (And Stop Losing Money in Them)

You probably have a gut feeling about when you trade best. Maybe you feel sharp in the morning, sluggish after lunch, or impulsive late at night.

But feelings aren’t data. And when you actually look at the numbers, the results can be surprising — sometimes the hours you think are your best are quietly draining your account.

The Hidden Time Problem

Here’s a pattern that appears in almost every trading account we analyze:

2-3 specific hours account for 40-60% of total losses.

Not 40-60% of trading time. 40-60% of losses. There are specific windows in your day where your expectancy (average P&L per trade) turns sharply negative — and you keep trading through them because you don’t realize it.

This isn’t about market hours. The London open, New York session, and Asia overlap have known characteristics. But YOUR worst hours are personal. They reflect:

• When your focus deteriorates
• When you trade out of boredom vs. opportunity
• When you chase moves instead of waiting for setups
• When decision fatigue kicks in
• When you’re influenced by previous session results

How to Find Your Worst Hours

Step 1: Group Your Trades by Hour

Take your trade history and group every trade by the hour it was executed (use UTC or your local timezone consistently). For each hour slot, calculate:

• Trade count — how many trades you took
• Net P&L — total profit or loss
• Win rate — percentage of winning trades
• Expectancy — average P&L per trade
• Largest loss — your worst single trade

Step 2: Identify the Negative Hours

Look for hours where expectancy is consistently negative. Not just one bad day — negative across weeks or months.

Here’s an example from a real trading profile:

Hour (UTC)	Trades	Net P&L	Win Rate	Expectancy
08:00	42	+$380	52%	+$9.05
09:00	68	+$920	57%	+$13.53
10:00	55	+$610	54%	+$11.09
11:00	48	+$190	50%	+$3.96
12:00	35	-$120	43%	-$3.43
13:00	31	-$340	39%	-$10.97
14:00	28	+$85	46%	+$3.04
15:00	45	+$520	55%	+$11.56
16:00	38	+$290	51%	+$7.63
17:00	22	-$180	41%	-$8.18
18:00	15	-$250	33%	-$16.67
22:00	18	-$480	28%	-$26.67
23:00	12	-$390	25%	-$32.50

The pattern is clear: 12:00-13:00, 17:00-18:00, and 22:00-23:00 are destruction zones. This trader’s combined losses in those 5 hours: -$1,760.

Their total P&L for the period: +$1,155.

Without those 5 hours, they’d be at +$2,915. That’s a 152% improvement.

Step 3: Understand Why Those Hours Are Bad

The causes vary by trader, but common patterns include:

Midday slump (12:00-14:00): Lower volume, choppy markets, boredom-driven trades. Your best setups happen during high-activity sessions. During the dead zone, you’re trading out of habit, not opportunity.