Best eCPM Days of 2025 (With Printable) – Behind the Numbers with Brad

Welcome to the much-anticipated release of the fifth-annual edition of “The Best eCPM Days of the Year” calendar.

Each year, we analyze historical trends to provide publishers with a graphical representation of what to expect in terms of ad spend based on every day of the year.

We focus on the events that happen throughout the year that can positively or negatively affect how and when advertisers choose to spend their advertising budgets. 

There are inevitable seasonal trends that can be counted on year in and year out, shaping how advertisers spend, and they always fall into one of two categories.

Holidays

First, you’ll notice that we highlight specific holiday events on the printable each quarter. Advertiser spending always increases around holiday events. 

To explain this, look no further than standard human behavior around one of these major holidays. Do you see people piling into stores frantically and delivery drivers a little more busy? 

Of course, you do. Everyone is prepping for these big days. In turn, advertisers are increasing their spending activity to reach the right audience and increase their sales.

End of Quarter

Second, you’ll notice that we split this calendar into the four quarters of the year. At the beginning of each quarter, you’ll see lower eCPM days, and at the end, CPMs that point to the higher end of the scale. 

Advertisers have budgets associated with months, quarters, or fiscal years. At the beginning of each, advertisers are likely to be a bit more conservative with their spending, while at the end, in a “use it or lose it” scenario, you’ll often see more aggressive spending. 

Any time a pool of advertisers grows and the advertising supply is finite, eCPM will increase, and more money will be spent.

Best eCPM Days Calendar for 2025

With all that buildup squared away, I give you the Best eCPM Days Calendar for 2025.

Now that the numbers have been revealed, let’s start with the disclaimer:

Past performance cannot guarantee future results. 

As discussed earlier in this post, advertising follows cyclical trends. We can easily predict that, on average, Q4 will always have better results versus Q1.

However, what is impossible to predict are events that happen throughout any given year that can cause those trends to change slightly. 

For example, nobody would have predicted in early 2020 that there would be a global shutdown and that our economy would be thrown for a loop. While it’s unlikely something like that will ever happen again in our lifetime (knocking on wood and crossing our fingers), some events are much smaller and can significantly impact these predictions.

Amazon Prime Days are a great example of this. We have no idea when these will fall this year, but when they do, the spending injected into the advertising market is enough to turn a sad day into a happy one for those who closely watch our RPMs. 

This happens not only because Amazon increases its advertising budgets along with this Prime Day but also because the increased spend from this single behemoth advertiser puts pressure on every other advertiser trying to reach the right audience, forcing them to pay more for the same space.

To add to the unpredictability of it all, we start the year with a new government administration in the United States, which always comes with some uncertainty relating to the economy and can undoubtedly trickle down into advertising spend.

Putting all of this unpredictability aside, we encourage you to print out this calendar and use it as a guide for when to do your best work. The calendar can be a great way to know the best days to publish or promote your highest-quality, seasonally relevant, brand-safe work for the best monetary results. 

Check out the links below to print your Best eCPM Days of 2025 calendars:

Print the Full-Color Calendar

Print the Black-and-White Calendar