"When will it arrive?" is the first question a shopper asks โ and the fastest way to lose their trust is to answer it wrong. A naive estimate that counts calendar days will happily promise delivery on a Sunday, or in the middle of Golden Week. An estimate that counts business days and knows your holidays is the difference between a confident buy and an abandoned cart.
Why naive estimates fail
Most "arrives in 3 days" widgets add three calendar days and stop. In Japan that breaks constantly: carriers slow down on some holidays, long breaks like Golden Week and ใ็ (Obon) span several days, and your own blackout dates aren't in the widget's model at all. The estimate looks precise and is quietly wrong.
Holiday-aware business-day counting
OrderRules (Advanced plan) shows an estimate like "Arrives Jul 10 โ Jul 11" on the product page, computed properly:
- Business days, not calendar days. Weekends are skipped.
- Blackout-aware. Your delivery blackout dates are skipped.
- National-holiday-aware. Your store country's public holidays are skipped โ for a Japanese store, that includes Golden Week. Obon isn't a public holiday, so add your Obon closure as blackout dates.
- Transit lanes. You enter the fewest and most business days shipping takes per origin and destination zone. The product page doesn't know the shopper's address yet, so it shows one range from your fastest lane to your slowest.
It skips the same blackout dates as your delivery rules. It's counted from today and doesn't apply lead time or cutoffs, though, so it's a shipping-time estimate, separate from the dates shoppers can pick in the date picker.
Why it's worth turning on
The estimated delivery date is a display feature โ the cheapest to enable and the highest-attach, because it answers the buying question up front. In markets where slot-and-date selection is the norm, an accurate "arrives" range signals that you run a tight, reliable operation.
Set it up
In Delivery, open Estimated delivery date, add your transit lanes, then add the Delivery estimate block to your product template in the theme editor. Details: Estimated delivery date.
See the Delivery Dates feature or start a free 14-day trial.