Clothing goes on sale at roughly the same points every year across the whole industry. The regularity comes from a buying calendar that was fixed long before the garments reached the shop.
Ranges are bought a year ahead
Apparel buying happens far in advance, with fabric committed, samples approved and production booked months before a garment appears on a rail.
The arrival date for each range is therefore known well ahead, and so is the date by which the previous range must be gone.
Markdown timing is set against those arrival dates. It is a space-clearing operation on a schedule, not a reaction to weekly sales.
Full-price selling has a defined window
A range is expected to sell at full price for a limited period, after which sell-through targets determine how deeply it is reduced.
Retailers measure the share sold at full price closely, because that figure, rather than total revenue, determines whether the season was profitable.
Anything below target enters the markdown sequence automatically, which is why reductions can begin while a range still looks new on the rail.
Seasons are cleared before they end
Winter coats are discounted in the middle of winter and swimwear in the middle of summer, which appears backwards from a shopper's perspective.
From the retailer's side it is not, because the following season's stock is already arriving and needs the space.
The best prices on seasonal clothing therefore fall while the weather still suits it, and the deepest cuts arrive when the selection has already thinned.
Basics sit outside the cycle
Plain items carried continuously, such as basic shirts, underwear and socks, are not tied to a season and can be held indefinitely.
Since there is no deadline to clear them, they are rarely discounted deeply and are instead used in multibuy offers that protect margin.
Waiting for a sale on these lines usually fails, because the mechanism that produces sales elsewhere does not apply to them.
Sale-specific ranges complicate the picture
Some goods are produced specifically for sale periods, priced against a reference figure they were never sold at in volume.
These items sit alongside genuinely marked-down stock, and the two are hard to distinguish on a crowded rail.
Construction detail is the usable signal: lining, seam finish, fabric weight and button quality tend to be visibly lower on goods made for the sale.