How should seasonal contextual advertising follow the calendar?
Part of Contextual targeting
The short answer
Seasonal contextual advertising times topic lists to the articles publishers write around holidays, school, tax season and weather. Because the US and Canadian calendars differ, a cross border plan needs a separate seasonal window for each country. Refresh each list before publishers start writing, check its suitability risks, and retire it at every targeting level when the season ends.
Key takeaways
- Publishers write seasonal stories before, during and after an occasion, so a topic list has to match the editorial cycle, not just the holiday date.
- Canadian Thanksgiving fell on October 12, 2026 and US Thanksgiving on November 26, 2026, so one shared fall window serves neither country well.
- Tax season follows two schedules: the IRS opened 2026 filing on January 26 with an April 15 deadline, and the CRA opened online filing on February 23 with April 30 for most individuals.
- Seasonal topics carry their own suitability risks, from remembrance coverage to winter storm reporting, and need a check each time they return.
- Retiring a seasonal list means removing it at every level where it was applied, then recording what was kept as evergreen.
How does editorial content change by season?
Seasonal content arrives in waves, and each wave has a shape. Before an occasion, publishers run planning stories: menus, gift guides, travel checklists, what to file and when. During it, coverage turns to the day itself and to news about it. After it, the stories shift to returns, recaps and getting back to routine. A topic list written only for the holiday date misses the planning wave, when readers are still deciding what to buy or do.
The after wave is real editorial content too. A Statistics Canada feature published on January 15, 2026, Back to everything! (for most of us) (opens in a new tab), opens on the moment "the holidays gave way to routines", a January story about everyday life after the season. Its August 18, 2026 feature, Back to school, by transit (opens in a new tab), shows the school season reaching into transportation rather than shopping. Seasonal topics spread into subjects a planner might not file under the season at all.
Definition
- Seasonal topic list
- A set of contextual topics or keywords tied to a dated occasion or period, with a start date, an end date and a note on what stays active afterward as evergreen content.
Why do US and Canadian seasonal calendars differ?
Some occasions share a date and some do not. Labour Day and Labor Day both fell on Monday, September 7, 2026, and Christmas on Friday, December 25, in both countries. Thanksgiving is the largest gap: the Canada Revenue Agency (opens in a new tab) lists Canadian Thanksgiving on Monday, October 12, 2026, while the US Office of Personnel Management (opens in a new tab) lists the US holiday on Thursday, November 26, 2026. A fall food and family topic list timed for one country runs six weeks early or late in the other.
| Occasion | Canada, 2026 | United States, 2026 | What it means for a topic list |
|---|---|---|---|
| Thanksgiving | Monday, October 12 | Thursday, November 26 | Two separate fall windows, about six weeks apart |
| Late May long weekend | Victoria Day, Monday, May 18 | Memorial Day, Monday, May 25 | Start of summer stories lands a week apart |
| National holiday | Canada Day, Wednesday, July 1 | Independence Day observed Friday, July 3 | Different names, symbols and event coverage |
| November 11 | Remembrance Day | Veterans Day | Same date, different tone; both bring military and loss coverage |
| After Christmas | Boxing Day, Saturday, December 26 | No federal holiday | A Canadian story cycle with no US match |
| Tax season | CRA online filing from February 23; April 30 for most individuals | IRS filing opened January 26; deadline April 15 | US filing opened about four weeks earlier |
Federal calendars are only the base layer. The CRA page itself notes that "several provinces and territories have their own unique holidays", and it lists the August 3 Civic Holiday as excluding Quebec. School years, regional festivals and state observances add more layers, so a cross border plan should name the province or state for any occasion it relies on, not just the country.
How early should seasonal topic lists be refreshed?
No platform or standards body sets a fixed lead time, so treat any number as a planning choice and test it. Two facts shape that choice. First, publishers write planning stories ahead of an occasion, so a list that switches on with the holiday arrives after them. Second, buying platforms need time too. Google's Display & Video 360 category targeting help (opens in a new tab) says "any recent events or news may take several days to be targetable using category targeting", and its keyword targeting help (opens in a new tab) says new keywords on an active line item may take "one or more days" to change bidding.
The practical method is to look at last year's articles. Open the publishers already on the plan, find when their first planning stories for the occasion appeared, and set the refresh date ahead of that. Then read a few of this year's new articles before the list goes live, to confirm the angle has not changed. Tax stories in particular follow rule changes, so the topic wording may need updating each year even when the season is the same.
A refresh routine for one seasonal topic list
- Confirm this year's dates for each country. Use the official calendar for the occasion, and note any province or state that differs.
- Find last year's first planning stories. Check the publishers on the plan and record when the wave began in each country.
- Rewrite the topics for this year. Replace dated references, such as last year's tax rules or a past event name, before the list goes live.
- Read this year's first articles. Confirm that the new stories match the rewritten topics and record any suitability concern.
- Load the list early enough for platform latency. Allow for the days a platform may need before new keywords or categories affect bidding.
Which seasonal topics carry suitability risk?
Seasons bring their own sensitive subjects. Remembrance Day and Veterans Day coverage includes war, injury and loss. Religious holidays bring faith content that some brands welcome and others prefer to avoid. Winter brings storm and road accident reporting, and back to school brings stories about school safety. None of this is unsafe journalism, but each falls in a category that a client may want to grade.
Platform controls name some of these themes directly. Display & Video 360's brand suitability settings (opens in a new tab) list theme exclusions including Religion, Politics, News (sensitive) and Health (sensitive). Use them as a check on the topic list, not as a substitute for reading the season's articles, and record which ones the client chose.
| Season or occasion | Editorial angles | Suitability question to settle |
|---|---|---|
| November 11 | Ceremonies, veterans' stories, military history | Does the client accept war and loss coverage beside its ads? |
| Winter holidays | Food, gifts, travel, faith services | Is religious content welcome, neutral or avoided? |
| Winter weather | Storm warnings, road conditions, outages | Is tragedy and accident reporting kept or excluded? |
| Back to school | Supplies, routines, transit, safety | Are school safety news stories kept apart from school life stories? |
| Tax season | Filing steps, deadlines, refunds, scams | Are fraud and scam warnings acceptable next to the message? |
What does a cross border seasonal plan look like?
Fictional example
A greeting card and stationery seller in Saskatchewan and Minnesota
An unnamed online seller of greeting cards, invitations and letter writing paper serves customers in Saskatchewan and Minnesota. It wants display ads beside articles about hosting family dinners, writing thank you notes and planning holiday gatherings.
The planner builds two fall windows instead of one. The Canadian list covers hosting and thank you note stories ahead of October 12, 2026 for Saskatchewan publishers; the US list covers the same subjects ahead of November 26, 2026 for Minnesota publishers. Both lists draw on last year's first planning stories to set their refresh dates.
A winter holiday list follows for both markets, with a suitability note: the client accepts religious holiday content but excludes winter storm and accident coverage. A Boxing Day topic appears on the Canadian list only. After each window, the planner removes the seasonal topics and keeps thank you note writing as an evergreen topic for both countries.
- Canada fall window: built around October 12, 2026.
- US fall window: built around November 26, 2026.
- Kept after the season: thank you note writing, as evergreen.
How do you retire a seasonal list after the season?
Retiring a list is a setup task with its own risks. In Display & Video 360, keyword lists can be applied at several levels, and the keyword targeting help (opens in a new tab) warns that "setting up keyword targeting at the insertion level overwrites keywords at the campaign level." A seasonal list removed at one level can stay active, or be hidden, at another. Check every level where the list was applied before calling it retired.
Seasonal placements need the same care as seasonal keywords. The Display & Video 360 website targeting help (opens in a new tab) describes a Download composite list option for selected channels and URLs; saving that file before and after the change gives a dated record of what was removed. Keep the evergreen part of the list, such as topics that serve the product all year, and write down why each one stayed.
Seasonal list retirement checklist
- Every campaign, insertion order and line item that used the seasonal list has been checked.
- Seasonal keywords and seasonal placements have both been removed.
- A dated record of the targeting before and after the change has been saved.
- Topics kept as evergreen are listed, each with a one line reason.
- Next year's refresh date is set from this year's first planning stories.
- Suitability notes from this season are filed with the list for next year's review.
How does PlacementGraph handle a seasonal brief?
Frequently asked questions
Should French language publishers in Canada follow the same seasonal calendar?
They share the national dates, with provincial differences. The CRA lists the August 3 Civic Holiday as excluding Quebec, and provinces add their own holidays. Check the province's official calendar for each occasion, and read French language articles separately, since their seasonal angles may not match the English ones.
Can one evergreen list replace seasonal lists?
It can cover the steady part of demand, but it will miss the planning wave around each occasion. One workable setup is an evergreen list that runs all year plus short seasonal lists layered on top, each with its own start and end date and its own suitability notes.
How should a seasonal list handle a date that moves each year?
Store the occasion, not last year's date. Thanksgiving, Victoria Day, Memorial Day and Labor Day fall on a weekday rule rather than a fixed date, so their windows shift each year. Confirm next year's dates on the CRA and OPM calendars when setting the refresh.
Do seasonal keywords work the same way on YouTube?
No. Google says that on YouTube, keywords and topic targeting act as a hint, while placement targeting is fully supported. A seasonal YouTube plan therefore leans on chosen channels and videos, with keywords as a supporting signal rather than a limit.
Sources
- Public holidays (opens in a new tab)Canada Revenue Agency
- Federal Holidays (opens in a new tab)US Office of Personnel Management
- IRS announces first day of 2026 filing season (opens in a new tab)Internal Revenue Service
- Tax season starts February 23: here's what you need to start filing (opens in a new tab)Canada Revenue Agency
- Back to everything! (for most of us) (opens in a new tab)Statistics Canada
- Back to school, by transit (opens in a new tab)Statistics Canada
- Category targeting (opens in a new tab)Google, Display & Video 360 Help
- Keyword targeting (opens in a new tab)Google, Display & Video 360 Help
- Brand suitability (opens in a new tab)Google, Display & Video 360 Help
- App, channel, and website targeting (opens in a new tab)Google, Display & Video 360 Help
- About contextual targeting (opens in a new tab)Google Ads Help
Researched and written by PlacementGraph Research. Read how we research, source and update these pages. Corrections: diana@placementgraph.com.