Dayparting (also called ad scheduling) is the practice of restricting or adjusting ad spend to specific hours of the day or days of the week based on when conversions are most likely to occur.
On platforms that support it, you can set bids to 0% (off) during low-performing windows or increase bids during peak windows.
Dayparting on Amazon vs. Google
Amazon: Does not natively support dayparting in Seller Central. Campaigns run 24/7 by default. However, third-party tools (Perpetua, Pacvue, Scale Insights, Teikametrics) offer ad scheduling by integrating with the Amazon Advertising API.
Google Ads: Native dayparting built in — you can view performance by hour and day in the "Ad Schedule" report and apply bid adjustments of -90% to +900% for any time window.
Meta Ads: Also supports scheduling, with lifetime budget campaigns letting you specify active hours.
When Dayparting Makes a Difference
- B2B products: Buyers often research and purchase during business hours (Mon–Fri, 9am–5pm). Running full budget overnight wastes spend.
- Impulse / gift items: Evening and weekend hours often convert better.
- Time-zone targeting: If 80% of your sales come from US East Coast, running full budget at 3am ET may be inefficient.
- Budget-constrained campaigns: If you cannot afford to run all day, concentrate spend during the hours with the best conversion data.
How to Identify Your Best Hours
- Pull Search Term / Placement reports and look for time-of-day data (Amazon doesn't surface this natively — use a third-party tool or download hourly data via the API)
- On Google Ads: Go to Campaigns → Schedule → View by Hour of Day. Filter by conversion rate and cost per conversion
- Run for 30+ days before drawing conclusions — single-week data has too much noise
Dayparting ≠ Reducing Budget
Dayparting is about concentrating the same budget into higher-performing windows, not cutting it. If your total daily budget is $100 and your best hours are 9am–9pm, dayparting ensures all $100 is spent then rather than trickling out through the night.