It means what it says, which is exactly why it’s confusing. Two different things happen on the same rows, and the pattern describes them separately even though you do them together.

“At the same time” in a knitting pattern means two sets of instructions happen simultaneously over the same rows. Typically one shaping action layered on top of an ongoing stitch pattern. This shows up most in garment shaping. The pattern can’t easily describe both in a single line, so it describes one action, then says “at the same time” and describes the other.

A concrete example

A typical instance from a sweater pattern:

“Continue in stockinette stitch. AT THE SAME TIME, decrease 1 st at each end of every 6th row, 5 times.”

Keep knitting stockinette (knit on RS, purl on WS), but on every 6th row, work a decrease at the beginning and end of that row. The decreases happen within the stockinette rows. You don’t stop one to do the other.

Row 1: knit across Row 2: purl across Row 3: knit across Row 4: purl across Row 5: knit across Row 6: ssk, knit to last 2 sts, k2tog (decrease row, still stockinette) Row 7: purl across …and so on, decreasing every 6th row, for 5 decrease rows total.

The stockinette never stops. The decreases layer on top of it.

Where this shows up

Most commonly: armhole and neckline shaping at the same time. The pattern describes armhole decreases, then says “at the same time, when piece measures X inches, begin neck shaping.” Both sets of decreases happen on the same rows once the neckline starts. You end up decreasing at both edges simultaneously, but on different schedules. Armhole every other row, neckline every 4th row, say.

Also appears when stitch patterns change during shaping. A sweater body might transition from ribbing to cables at the same time as waist increases. Front bands too: “Continue in seed stitch. AT THE SAME TIME, work buttonhole on rows 4, 14, 24, and 34.” The seed stitch carries on. The buttonholes slot in at intervals.

Why patterns are written this way

The alternative is worse. Writing every row with both actions merged makes the instructions long, repetitive, and harder to follow for anyone past the beginner stage. Separating the actions and telling you to combine them is cleaner once you understand the convention.

Think of it as two tracks playing simultaneously. Melody and bass line. Each makes sense alone. You play both.

How to keep track

The knitting isn’t hard. Remembering which row needs which action (or both) is the hard part.

Simplest approach: write it out before you start. Merge the two instruction sets into a single row-by-row list. “Row 1: knit, decrease at armhole edge. Row 2: purl. Row 3: knit, decrease at neck edge.” Takes a few minutes but kills the mental load while you’re actually knitting.

Two counters work too. One tracks the armhole interval, the other the neckline. When both hit their trigger on the same row, you do both actions. Some knitters mark the pattern directly, annotating which rows have armhole decreases, neck decreases, or both. Different colored highlighters help.

KnitTools’ Row Counter supports multiple concurrent counters for exactly this situation.

When intervals collide

When the two actions run on different schedules, some rows will have both. Armhole decreases every 2nd row, neckline every 4th. That means every 4th row gets two sets of decreases.

Work them separately across the needle. Start with whichever decrease belongs at the beginning of the row, knit across, do the other at the far end. If both happen at the same end (rare, but possible in asymmetric construction), work them in sequence.

When the actions don’t start together

Sometimes it’s staggered. “Begin armhole shaping” and then three rows later “at the same time, begin neck shaping.” The two overlap for part of the work. One starts first, both run simultaneously for a while, then one finishes before the other.

This is where a merged row-by-row plan pays off most. Map the armhole rows. Overlay the neck rows. Mark which rows have just armhole, which have just neck, which have both. Knit from the merged plan. If you’re also untangling the rest of the pattern’s structure, that guide covers sizes, repeats, and abbreviations.

Common questions

Can you forget one of the actions for a few rows and recover? If you catch it within a row or two, rip back. Several inches past, you might add an extra decrease on the next scheduled row. One missed decrease: usually fine to adjust. Multiple: ripping is safer.

Can you do the actions separately instead of together? No. The timing is intentional. Armhole and neckline shaping overlap because the decreases need specific intervals for the correct shape. Finishing one then starting the other changes the proportions.

Does this only show up in garments? Mostly. Occasionally in accessories (hat colorwork changing at the same time as crown decreases) or complex stitch patterns. Garment shaping is by far the most common context.

Why don’t patterns just write every row out? Some do, especially beginner-friendly ones. But for complex garments with multiple sizes, row-by-row instructions for every size would add ten pages. The convention saves space, and experienced knitters expect it.