Dayparting means you tell the auction when it is allowed to spend. People also write day parting, ad scheduling, or time-of-day targeting. Same clock. Different logos on the button.
Questions that bring people here
The words, without a glossary exam
| What people type | What it actually is |
|---|---|
| Dayparting / day parting | ON/OFF or bid up/down by hour and weekday |
| Ad schedule / ad scheduling | Google's name. Meta says Ad scheduling on the ad set when budget type allows it |
| Time-of-day targeting | Same clock, older media-plan language |
| Day-of-week schedule | Coarser: off Sunday, on Friday. Start here if volume is low |
| Hourly bid adjustment | Google-style: stay on, pay more or less in that hour |
| Pacing | Not dayparting. How the platform spends inside the hours you already allowed |
When dayparting earns its keep
- You can see a repeatable overnight trough in your Meta or Google hourly breakdown, not a blog that says "evenings convert."
- Those hours still spend real money. A £4 cell is not a schedule.
- Late-night buyers do not need a human on live chat for the promise you made in the ad.
- The SKUs those hours sell can ship. Empty UK 10 at 21:00 is still empty UK 10. Variant OOS.
Fashion has its own evening-and-payday patterns. They are priors, not laws: dayparting for fashion.
When it is show
- Advantage+ / catalog delivery already hunts demand. A tight clock can starve learning. See Meta how-to.
- PMax does not behave like a Search campaign with a neat ad schedule. Google how-to.
- New accounts. Four weeks of thin hours will invent a religion. Leave it 24/7 until the heatmap is ugly in an obvious place.
- Weather as an hourly stop rule. Rain at 15:12 is not a daypart. That mix-up has its own page: weather-based dayparting.
A worked micro-example
UK apparel. Ad account timezone London. Last 60 days: 01:00-06:00 takes 11% of Meta spend and 3% of purchases. CPA is triple the daytime CPA. Support is closed. No same-day delivery promise in the ads.
Do this: turn that overnight block OFF on prospecting ad sets that use a lifetime budget. Leave remarketing and catalog alone for a fortnight. Do not also "plus 40% 19:00-22:00" in the same change. One cut. Then read CPA and volume, not guesswork.
If you cannot point at a cell with spend and say "that hour is expensive on purpose," you are decorating the clock.
Dayparting in Google Ads: where it lives and what actually applies
Google calls it an ad schedule, and it sits in a different place from the Meta control most operators learn first. In the current interface: pick the campaign, open Settings, then Ad schedule (older accounts still see it in the left nav under the campaign). You add rows like Mon-Fri 09:00-17:00 in 15-minute increments, and each row carries a Bid adj. column. Every hour you do not list is off. That trips people up: an empty schedule means all hours, but a single row means only that row.
Two things decide whether the schedule does anything. The first is the account time zone, set when the account was opened and effectively fixed afterwards; if it says Los Angeles and you sell in Manchester, your 02:00 block is somebody else's teatime. Check it in Admin > Account settings before you cut a single hour. The second is your bidding strategy, because the percentage modifier and the on/off window are not treated the same way.
| Bidding strategy | Hours you switch off | Bid adjustment (-100% to +900%) |
|---|---|---|
| Manual CPC | Honoured | Applied to your max CPC |
| Maximise clicks | Honoured | Applied to the CPC ceiling |
| Target CPA / tROAS / Maximise conversions or value | Honoured | Ignored; the model sets its own hourly bids |
So on a Smart Bidding Shopping or Search campaign, a tidy grid of +20% evenings and -30% mornings is decoration. The only lever that still bites is removing the hours entirely, which is exactly the change you should be slowest to make.
Get the evidence before the grid. On the campaign's statistics table use Segment > Time > Hour of day for the 24-row cut, or Day of week for the coarse version. For the full 168 cells, build it in Insights and reports > Report editor with Day of week and Hour of day as rows, and cost, conversions and conv. value as columns. Ignore any cell under roughly £50 of spend across the window; on a £3,000/month account most hours will be that thin, which is your answer. Every edit lands in Tools > Change history, so note the date you cut and read the same report a fortnight later.
Ralph treats Google hours as evidence, not as a writer. He reads the hourly picture and puts the finding in the morning brief with the block, the spend share and the CPA gap, then leaves the schedule for you to type. Meta is where the write lives, after approve. That split is deliberate: Google's schedule interacts with bidding strategy, budget shifts and PMax in ways worth a human ten seconds of thought.
How Ralph fits, without the pitch
Ralph reads Meta hourly delivery and can draw a week-by-hour picture. Suggestions come from this store's rhythm. Thin data stays empty. Lifetime sets can take a native schedule after approve. Daily sets can take a stepped throttle after approve. They are different writes. Google gets a finding, not a silent mutate. Why Ralph for dayparting. Daily-budget detail: throttle. Docs: Ad Studio.
Terms you will see in search and in tools
People (and models) ask this with a pile of synonyms. They are the same job unless noted:
- dayparting, day parting, day-parting
- ad schedule, ad scheduling, ads schedule
- time of day targeting, hour of day, day of week
- bid modifier / bid adjustment by hour
- dayparting facebook ads, meta ads scheduling
- google ads ad schedule, pmax dayparting (usually a dead end)
If an answer does not mention timezone, budget type (Meta), or sample size, it is not an operator answer.
Decide if dayparting is worth doing this month
- Pull hourly results. Last 28-90 days of spend, purchases, and CPA or ROAS by hour in the ad account timezone. If a cell has almost no spend, ignore it.
- Check fulfilment hours. If support and pick-pack sleep at 1am, late-night impulse may still be fine. Same-day delivery promises are not.
- Check stock on the SKUs ads sell. Do not schedule harder into a size run that is already broken. Cover first.
- Start with one OFF window. Turn off the weakest block you trust (often deep overnight). Leave the rest on. Re-read in two weeks.
Questions people actually ask
What is dayparting in advertising?
Dayparting (day parting, ad scheduling, time-of-day targeting) means you choose which hours and days an ad set or campaign may spend, or you raise and lower bids in those windows. It is a clock. It is not creative, and it is not stock cover.
Is dayparting the same as budget pacing?
No. Pacing is how the platform spends a daily or lifetime budget across the allowed hours. Dayparting changes which hours are allowed. You can pace beautifully into dead hours if the clock is wrong.
Should every Shopify store daypart?
No. If you have thin hourly data, catalog or Advantage+ delivery, or you still advertise empty sizes, fix those first. Dayparting a dirty catalogue is a more precise way to waste money.
What is the difference between dayparting and day-of-week scheduling?
Day-of-week is a coarse cousin: off on Sundays, on on payday Friday. Dayparting is hour-level inside those days. Start coarse if volume is low.
Does Ralph auto-daypart my ads?
No. Ralph can read Meta hourly history and suggest blocks. Native Meta schedules need a lifetime budget and an approve step. Google stays recommendation-only. Writers stay off until you turn them on.
Dayparting or day parting: which spelling?
Both. Operators say dayparting. Older media plans say day parting. Google also says ad schedule. Same job.
Which ad platforms support dayparting?
Google Ads, Microsoft Advertising and most programmatic DSPs have full schedules with bid adjustments. Meta has one on lifetime budgets only. TikTok has an hour grid at ad group level. Amazon has schedule-based bid rules for Sponsored Products. LinkedIn and Pinterest have no hour-of-day control. The comparison is on dayparting by ad platform.
dayparting
Dayparting means telling an ad platform when it may spend, by hour and day. Also called ad scheduling or time-of-day targeting. It earns its keep when you have sixty days of hourly evidence and a block that is confidently below average; otherwise leave the clock alone.
day parting
Two words or one, it is the same thing: ad scheduling by hour of the day and day of the week. Google calls it ad schedule; Meta calls it Ad scheduling and only offers it on lifetime budgets.
Where is dayparting in Google Ads?
Open the campaign, go to Settings, then Ad schedule. Add rows in 15-minute increments and use the Bid adj. column for hourly modifiers. Any hour you do not list is off, so an empty schedule means all hours are eligible. Check the account time zone in Admin, Account settings first, because the grid follows it, not your customers.
Do hourly bid adjustments still work with Smart Bidding?
No. On Target CPA, tROAS, Maximise conversions or Maximise conversion value, Google ignores ad schedule bid adjustments and sets its own hourly bids. The schedule windows themselves are still honoured, so switching hours off works. Percentage modifiers only bite on Manual CPC and Maximise clicks.
Can Ralph change my Google Ads schedule for me?
No. Google hours stay recommendation-only on every plan. Ralph reads your hourly results, names the weak block with its spend share and CPA gap in the morning brief, and you type the schedule yourself. The dayparting writes Ralph does hold, after your approval, are Meta lifetime schedules and daily-budget throttles.
If the hours are the problem: Ralph reads sixty days of your hourly results, proposes the switch-off with floors, and applies it on Meta after you approve. On Google he recommends the schedule. See Ralph · How Ralph dayparts · Docs