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A day of the week costing much more than the rest

A weekday costing much more per conversion than the others. Judged by day, not by hour, and only on days with enough conversions of their own.

By the Optizads team

On this page
  1. Why it matters
  2. How Oppy decides
  3. Check it yourself in Google Ads
  4. What to do about it
  5. Terms on this page
  6. Other checks in this area

The short answer

Oppy compares each day of the week's cost per conversion with the other six days, rolled up across campaigns. A day is flagged when it has enough conversions to judge and costs far more per conversion than the other days.

Why it matters

Hour of day is the analysis every tool offers and almost no account can support. Twenty-four hours across seven days is 168 buckets, and an account with 200 conversions a month has about one in each. Patterns found there are noise.

Seven buckets is a question an account can answer. Even then many cannot, so the bars are strict.

How Oppy decides

The check runs once the account has enough conversions recently to compare fairly.

Checks that weigh money or clicks judge what they find on your own account's numbers, not on one figure applied to every account, so what counts as a problem on a small account is not the same on a large one. Checks on settings read how the account is set up.

When there is too little to go on, the check says so instead of guessing. A finding always comes with the rows behind it, so you can read the evidence before you decide.

How the check runs
This check
Step of the auditSpend
What it readsCampaigns, their settings and their results
Needs trustworthy conversionsYes. It stays silent when the tracking step fails.
What happens nextReported in the audit with the rows behind it. The decision stays with you.

Check it yourself in Google Ads

  1. In Google Ads, open Campaigns for the last 30 days and segment by Time, then Day of the week.
  2. Add up cost and conversions per day across campaigns.
  3. For each day with enough conversions to judge, compare its cost per conversion with that of the other six days together.
  4. Note any day that costs far more.

What to do about it

Before cutting a day, look for a cause: a different mix of searches, a competitor active that day, or a team not answering on that day.

If the gap holds over several months and the campaign bids manually, lower bids that day with a schedule bid adjustment rather than switching it off, so it stays measured. On Smart Bidding a day adjustment is ignored: read what that day's searches want, or narrow the schedule.

Terms on this page

Other checks in this area

Questions, answered.

Anything else? Ask Oppy in the product, or write to the team.

Should I turn off Google Ads on weekends?

Only if weekends reliably cost much more per conversion over several months, or nobody can handle the leads. Lowering bids keeps the data coming; switching off stops it.

Why does Oppy look at days rather than hours?

Because most accounts have too few conversions per hour for any pattern to be real. Seven days give each bucket enough data to mean something. On accounts with enough conversions, the hours check reads hour by hour too.

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