How-to · Updated October 12, 2026
Check your Google Ads time zone before it skews your reports
Updated October 12, 2026
10 minutes
Find your Google Ads account's time zone and compare it with your customers' and with every tool you check against. Reports, hour segments and ad schedules all run on it, while billing pages show Pacific time. A standard account's time zone cannot be changed, so set schedules and comparisons to it rather than opening a new account.
Before you start
- Standard or Admin access to the Google Ads account to change an ad schedule. Read-only access can view campaigns but not edit them.
- The time zone of each tool you compare against, such as GA4, a CRM, a call tracker or the phone system's call log.
Find the account's time zone
The time zone was chosen on the Billing page when the account was created. Google says it cannot be updated in a standard account.
- Open Admin, then Account settings, and look for the time zone there. Google's help pages do not say where an existing account shows it, so if it is not listed there, check the account's other settings pages.
- Write down the region or city it names, not only the offset. Two zones that share an offset in winter can differ by an hour in summer.
- Compare it with where your customers are and with each tool on your list. A match means the time zone is not why daily numbers differ. A mismatch means every per-day or per-hour comparison needs converting.
Set ad schedules in the account's time
Google says ad schedules are set in the account's time zone. An account set up in another zone shows ads by that zone's clock, so a schedule typed as your opening hours can run before you open and stop before you close.
- Go to Ad schedule in the Campaigns menu and select the pencil icon, then the campaign.
- Convert your hours into the account's time zone and enter those. A schedule that crosses midnight in the account's time needs two entries, one for each day, and a campaign can have at most 6 schedules a day.
- Click Save.
- Convert call asset schedules too, set under Advanced options on each call asset, so the number shows only while someone can answer. Google's call asset page does not name their time zone, but they are likely on the same clock as ad schedules.
Compare reports on the same clock
A comparison between Google Ads and another tool holds only when both are read on the same clock, so put every figure on the account's time zone first.
- Read Google Ads figures by day or by hour only in the account's time zone. Google says reports segmented by time follow it.
- For conversions, add Conversions (by conv. time) or All conv. (by conv. time). The standard conversion columns file a conversion under the date of the ad click, and Google suggests the by conversion time columns when comparing with other analytics tools such as Google Analytics.
- When a tool runs in another zone, compare whole weeks rather than single days. A gap of a few hours moves only the leads that arrive within those hours of midnight.
- Match charges against the billing pages on their own clock. Google says all items on billing pages show only in Pacific Standard Time (PST), whatever the account's zone, so a charge can sit on a different date there than in reports.
Check it worked
Open Ad schedule and choose the Hour or Day and Hour subtab. Over the next week, clicks and impressions should fall inside the hours you meant, read in the account's time zone.
Then compare one full week of leads in Google Ads, using the by conversion time column, with the same week in your other tool. Google says reporting can lag 24 to 48 hours, so leave the last two days out.
Is it worth opening a new account in the right time zone?
Rarely. Google's only route for a standard account is a new account with the zone set on its Billing page, and campaigns copied into it bring no history: it tracks performance from the day they launch. Converting schedules and comparisons costs nothing. A new account is worth it only when the gap keeps causing mistakes and the account has little history to lose.
A manager account can have its time zone reset once, only eastward, at an Admin user's request.
Does the time zone change where ads show?
No. Google says the time zone affects only the administration of the account, not the locations where ads can show. Location targeting is a separate setting.
Time zones Google Ads cannot use
Google Ads supports only time zones in whole or half hours from GMT. A place offset by a quarter hour has to pick a neighboring zone, so its account runs some minutes off local time.