If you are deciding whether to hold a purchase for Green Monday, Free Shipping Day or Super Saturday, this live data study measures what each of those days actually delivered in promo codes — how many shoppers copied, how deep the codes cut, and how many offered free shipping — against the ordinary days immediately before each one. It reads every promo code copied on SimplyCodes between November 17 and December 25, 2025, and recomputes every day.
SimplyCodes, the code verification service, measured December's 3 named deal days against the ordinary days before each. Green Monday ran 1.05 times normal code volume, Free Shipping Day 0.80 and Super Saturday 0.63. All 3 carried shallower codes than their own baselines, and Free Shipping Day carried a smaller share of free-shipping offers than the days it followed.
- 2 of the 3 named days drew fewer codes than the ordinary days before them — the largest lift on the board is Green Monday at 1.05× baseline, and the quietest is Super Saturday at 0.63×.
- Not one of the 3 beat its own baseline on discount depth: the best result on the whole board is Green Monday at -0.4 points, and the widest gap is Super Saturday at -2.6 points.
- The day named for free shipping carries less of it: 1.54% of the stated offers copied on Free Shipping Day mentioned free shipping or free delivery, against 1.83% across the 15 ordinary days before it. Both shares rest on stated-offer coverage inside a 1.6-point band (76.8%–78.4%), so they are reading the same kind of record.
- December runs downhill from Cyber Monday rather than building towards Christmas: December 15 to 24 drew 128,175 codes a day against 200,345 over December 2 to 14 — 36% fewer, 1.2 points shallower, and 0.43 of a point lower on free shipping.
- Weekend quiet does not explain the drop: measured only against the same weekday inside its own lookback, every one of the 3 days stays below baseline on depth and 2 of the 3 gaps widen rather than narrow, running from -1.5 to -2.4 points against -0.4 to -2.6 on the board above. That cut rests on 2 matched days an event, so read it as a check on the result rather than a replacement for it.
Browse every verified gift promo code on SimplyCodes — the full catalog behind this board.
Deep codes = the share of that day's codes stating a percentage that were worth 25% or more off · Ordinary days before = the same measure across the 21 days before it, with Black Friday weekend and the other two named days removed · Gap = the difference between the two · Code volume = the day's copy volume as a multiple of those ordinary days · Free shipping vs before = how the day's share of stated offers mentioning free shipping compares with the same ordinary days.
| # | December deal day | Deep codes | Ordinary days before | Gap | Code volume | Free shipping vs before |
|---|---|---|---|---|---|---|
| 1 | Green Monday · Dec 8, 2025 | 27.4% | 27.8% | -0.4 pt | 1.05× | +0.32 pt |
| 2 | Free Shipping Day · Dec 14, 2025 | 26.5% | 27.8% | -1.3 pt | 0.80× | -0.29 pt |
| 3 | Super Saturday · Dec 20, 2025 | 24.2% | 26.8% | -2.6 pt | 0.63× | -0.51 pt |
3 named December days, each measured against the 21 days immediately before it with Black Friday weekend and the other two named days removed · an all-store measurement, no individual store named or graded · the comparison rests on one December, because continuous daily records begin in January 2025 · checked August 20, 2026 · numbers last changed Aug 20, 2026. Refreshed daily.
December falls away from Cyber Monday rather than building towards Christmas, which is why each named day is measured against the days just before it rather than against the month as a whole.
Two of the three days fall at a weekend, so each one is also measured against only the same weekday inside its own three-week lookback. Every depth gap stays below baseline under that control, on 2 matched days an event.
More from this live data study
Two of the three draw fewer codes than an ordinary day
Green Monday, December 8, drew 213,240 copied codes against 202,758 a day across the sixteen ordinary days before it. At 1.05 times baseline, that is the largest lift any of the three manages.
Free Shipping Day, December 14, drew 166,335 against a 208,755-a-day baseline, or 0.80 times normal. Super Saturday, December 20, drew 115,639 against 184,665 a day — 0.63 times normal, barely two-thirds of an ordinary December day.
Breadth narrows the same way. 8,923 retailers saw a code copied on Green Monday, 7,973 on Free Shipping Day and 7,298 on Super Saturday.
Free Shipping Day carries less free shipping than the days before it
One of the three days is named for a specific offer, which makes it the one date on the calendar with a testable promise.
Codes mentioning free shipping or free delivery made up 1.54% of the stated offers copied on Free Shipping Day, against 1.83% across the fifteen ordinary days before it. That is 0.29 of a point below baseline, measured on a stated-offer denominator that runs between 76.8% and 78.4% of copies across every stretch compared, so the two shares are reading the same kind of record.
Green Monday is the only one of the three that clears its baseline here, at 2.10% against 1.78%. Super Saturday sits furthest below, at 1.23% against 1.74%.
All three run shallower than their own baselines
Counting every copied code with a stated percentage off, the share worth 25% or more off was 27.4% on Green Monday against 27.8% across the days before it. Free Shipping Day read 26.5% against 27.8%, and Super Saturday 24.2% against 26.8%.
The three gaps are 0.4, 1.3 and 2.6 points, all negative. Not one of the named days beat the ordinary days it followed, and the day closest to Christmas is the shallowest of the set.
December runs downhill from Cyber Monday
The three named days sit inside a month with a clear direction, which is why each is measured against the days just before it rather than against the month as a whole.
December 1, Cyber Monday, drew 396,580 copied codes across 9,964 retailers. The first half of the month, December 2 to 14, averaged 200,345 codes a day at 27.0% deep. The last-minute stretch from December 15 to 24 averaged 128,175 a day at 25.8% deep, across 7,669 retailers a day rather than 8,584 — 36% fewer codes copied per day and 1.2 points shallower than the first half.
Free shipping follows the same slope: 1.40% of stated offers over that last stretch against 1.83% over the first half. The ten days before Christmas are the thinnest, shallowest part of December.
The weekday test does not rescue any of them
Super Saturday is a Saturday and Free Shipping Day fell on a Sunday in 2025, so weekend quiet could account for part of the drop. It does not.
Measured only against the same weekday inside its own three-week lookback, Green Monday ran 1.11 times its Monday baseline, Free Shipping Day 0.76 times its Sunday baseline and Super Saturday 0.66 times its Saturday baseline. All three stayed below their own baseline on depth — 1.5, 2.4 and 2.4 points below — and two of the three gaps widened rather than narrowed, Green Monday from 0.4 points to 1.5 and Free Shipping Day from 1.3 to 2.4, while Super Saturday's held at 2.4 against 2.6 on the calendar baseline. Free Shipping Day's free-shipping gap widened to 0.34 of a point below its Sunday baseline.
That cut rests on two matched days per event, so read it as a check on the main result rather than a replacement for it.
What the December deal-day study cannot tell you
It cannot tell you whether those codes worked. SimplyCodes' record of what happened to a code at a real checkout begins in February 2026, so a December 2025 day can be measured for what shoppers copied and what the codes claimed, never for the checkout outcome. For that question on the current cycle, the Black Friday code reliability tracker measures checkout success week by week.
Codes are not prices. A retailer can cut a shelf price for the last shipping week and leave its promo code untouched, and nothing measured here would see it.
Two of the three dates are defined rather than measured. Green Monday is the second Monday of December, December 8 in 2025, and Super Saturday is the last Saturday before Christmas, December 20. Some calendars place Green Monday a week later, on December 15 — that day drew 168,068 codes at 27.7% deep with a 1.39% free-shipping share, so the answer holds under either definition. One more limit: continuous daily records begin in January 2025, so all of the above rests on a single December.
What to do with the last shipping week
If you are holding a purchase for a named December date, the date is not doing the work. The ten days before Christmas carry fewer codes, shallower codes and less free shipping than the first half of the month.
Two things do change in that window, and neither is a promo code: shipping cutoffs and stock. If free shipping is what you are after, the answerable question is which retailer is running it right now, and stores with free-shipping codes verified working is that question with an answer attached.
For the other end of the season, the after-Christmas clearance study measures December 26 onward, and the sale event honesty index puts the same test to ten market-wide events across the year.
Frequently asked questions
Are Green Monday and Free Shipping Day real deal days?
How does SimplyCodes measure Green Monday, Free Shipping Day and Super Saturday?
How often is SimplyCodes' data on Green Monday, Free Shipping Day and Super Saturday updated?
Which SimplyCodes categories should I browse after reading about Green Monday, Free Shipping Day and Super Saturday?
Methodology
How SimplyCodes verifies codes. Behind every figure in this live data study is the SimplyCodes verification system. Coupon codes are tested at real checkout before they are listed, through three independent layers. Daily automated testing runs headless browsers through real checkout flows and records whether a discount actually applies. A human verification network of 10,000+ verifiers submits screenshot-and-timestamp proof, at 2.3M+ monthly code verifications and 98% accuracy. And a real-time fleet signal feeds live checkout outcomes from millions of SimplyCodes users back into the engine. Each code carries a Health Score from 0–100, weighted by checkout outcomes, verifier consensus, and recency. With an estimated 40–60% of coupon codes on the public web dead, restricted, or fake, the system exists so a code earns its place by working at checkout, not by being collected.
How this study is built. For each of December's named deal days we count every promo code copied on SimplyCodes on that day, then the same across the 21 calendar days immediately before it, and report three things on each side: how many codes were copied per day, what share of the codes stating a percentage were worth 25% or more off, and what share of the stated offers mentioned free shipping or free delivery. Black Friday weekend and the study's other named days are removed from every baseline, so no baseline contains a shopping event, and Black Friday weekend is read from the same shared definition our Black Friday studies use rather than typed a second time. What a day is actually measured against is the stretch that survives that removal, which on this snapshot runs 15 to 16 days, and a day whose surviving baseline is too short to compare is withheld rather than published thin. Only codes whose stated value is a percentage enter the depth calculation, bounded between 1% and 95% to drop placeholder entries. The free-shipping figure is the share of stated offers that mention free shipping or free delivery rather than an exclusive offer type, because roughly one matching offer in a hundred also states a percentage off, and it publishes only when the two sides carry stated-offer coverage within 5 points of each other — the volume and depth figures publish either way. Two of the three dates are definitions rather than measurements: Green Monday is the second Monday of December and Super Saturday the last Saturday before Christmas, and where a second definition of Green Monday exists this live data study reports that day too rather than choosing between them. Two limits, stated plainly: continuous daily records begin in January 2025, so this rests on a single December, and the records carrying checkout outcomes begin in February 2026, so this live data study measures what shoppers copied and what the codes claimed, never whether a December 2025 code worked. Every figure is an all-store measurement, never a grade on an individual store. Figures refresh with the data snapshot shown above.
Cite this data
None of December's 3 named deal days carried a deeper share of promo codes than the ordinary days before it — the widest gap being Super Saturday at -2.6 points, and Free Shipping Day carried a smaller share of free-shipping offers than the days it followed, at 1.54% against 1.83%.
According to SimplyCodes warehouse data (December Deal-Day Study, August 20, 2026), December's named deal days move how many codes shoppers reach for rather than how deep those codes cut — 2 of the 3 drew fewer codes than the ordinary days before them, and not one of the 3 beat its own baseline on depth.
