Prime Day 2026 is in June. If your Amazon ad campaigns are running flat across all 24 hours right now, you are going to have a problem.
Dayparting is the practice of scheduling your ads to run only during specific hours, or at different intensity levels at different times of day. On a normal week it is a useful efficiency tool. On Prime Day it is close to mandatory.
Here is how to set it up before the event.
Why dayparting matters more on Prime Day than any other day
On a normal day, your campaign might run inefficiently for a few hours and you lose $30. On Prime Day, that same inefficiency runs at 3-5x the normal spend rate because your budgets are higher and CPCs are elevated across the board. Dead-hour spend on Prime Day does not cost you $30. It costs you $150, and it comes directly out of the budget you needed for peak traffic.
The math is simple: if your daily budget is $500 and you spend $200 of it between midnight and 8am when almost nobody is converting, you have $300 left for the 16 hours when your customers are actually shopping. You have already lost 40 percent of your budget before most people wake up.
Dayparting solves this by letting you define exactly when your campaigns run. On Prime Day, that means concentrating your budget on the hours that matter.
What the Prime Day traffic pattern looks like
Prime Day shopping follows a predictable shape, though the exact times shift by category:
Morning surge (7-11am local time): Deal alert emails go out, shopping apps light up with notifications, and buyers who have been waiting for Prime Day start checking their wishlists. This is typically the highest-intent window of the day.
Midday lull (11am-3pm): Traffic drops as the initial rush settles. Conversion rates often fall here. Running at full budget during this window means spending at higher CPCs for lower conversion.
Evening surge (6-10pm): A second wave of shoppers arrives after work. This window often has strong conversion rates because these are buyers who have been thinking about their purchases all day.
Late night (10pm-midnight): Drops off sharply. Some categories see late-night deal hunters but volume is low and CPCs often stay elevated.
The implication for your ad schedule: front-load toward the morning, pull back midday, surge again in the evening, and go minimal overnight.
How to build the schedule in Off Hours
Setting up Prime Day dayparting in Off Hours takes about five minutes once you know your target hours.
Step 1: Create a new dayparting rule
In your Off Hours dashboard, create a new rule and select Dayparting as the rule type. Give it a name that makes it easy to identify during Prime Day: something like "Prime Day 2026 Peak Hours."
Step 2: Set the 7x24 grid
The dayparting grid shows every hour of every day of the week. For Prime Day, select:
- All hours 7am-11am: on
- All hours 11am-3pm: reduced or off depending on your category
- All hours 3pm-10pm: on
- All hours 10pm-7am: off
This is a starting point. If you have historical data from last Prime Day showing different peaks for your category, use that instead.
Step 3: Assign the rule to your Prime Day campaigns
Apply the rule to the specific campaigns you are running during the event. If you have campaigns you want running at full capacity regardless of hour (like Sponsored Brand campaigns for brand awareness), exclude those and apply the schedule only to your performance-focused Sponsored Product campaigns.
Step 4: Pair it with a budget rule
Dayparting controls when campaigns run. A budget rule controls what happens when spend accelerates faster than expected. For Prime Day, set a budget cap rule that pauses campaigns if they hit a daily spend threshold before your peak evening window. This prevents the scenario where you blow your entire budget by 2pm and go dark for the evening surge.
Step 5: Test before the event
Activate the rule 3-5 days before Prime Day on lower-stakes campaigns to confirm the scheduling is working as expected. The last thing you want is to discover a configuration error at 7am on Prime Day.
What to watch during the event
Once your rules are live, resist the urge to manually override them every time you refresh the dashboard. The rules exist so you do not have to make real-time decisions under pressure.
What you should watch:
- Budget pacing: Are your campaigns spending through their daily budgets before the evening window? If yes, either increase the budget or tighten the dayparting further.
- Conversion rate by hour: If the morning surge is underperforming, your dayparting assumption may be off for your category. Adjust the schedule for Day 2.
- Campaign-level ACOS: Any campaign running above your target ACOS for more than two consecutive hours is worth pausing or pulling back.
The alternative
Amazon's native campaign manager does not offer hour-by-hour scheduling. You can increase budgets by percentage for designated special events, but you cannot say "run these campaigns from 7am-11am and 3pm-10pm only." That control requires a third-party tool.
Off Hours was built specifically for this: rule-based scheduling that gives you precise control over when your campaigns run, without bundling it into a suite of features you do not need.
Prime Day 2026 is in June. Your setup window is shorter than it has ever been. Get the schedule in place now.
Start with the full Prime Day 2026 seller prep guide if you have not already.
Off Hours is $149/month per Amazon Ads account. Start a 14-day free trial, no credit card required. Have your Prime Day dayparting live before the event.