
When you place an online order and see Delivery in 3-5 business days, it may seem straightforward. But if you’ve ever wondered which days actually count toward that shipping estimate, you’re not alone.
Understanding the difference between business days, weekends, and holidays can help you set more realistic expectations whether you’re waiting on a personal parcel or managing logistics for a business.
Lets break down what really counts toward your shipping ETA.
Whats the Difference Between Business Days and Calendar Days?

First, its crucial to distinguish between calendar days and business days:
- Calendar days refer to every day of the week: Monday through Sunday, including weekends and public holidays.
- Business days, in shipping terms, generally refer to Monday through Friday, excluding national holidays.
So, if a seller promises 3 business days, and you order on a Wednesday, your estimated arrival would be the following Monday (Wednesday, Thursday, Friday as business days, skipping the weekend).
When Do Shipping Carriers Consider the Clock Starts?
Carriers and retailers typically break down the delivery timeline into two phases:
- Order Processing or Handling Time The time the seller takes to prepare and dispatch your item.
- Transit Time The number of business days it takes for the shipping company to deliver your package once its in their hands.
Lets say you order on a Friday evening:
- The retailer might only process the order on Monday.
- If the shipping method is 2 business days, youll likely receive it by Wednesday not Sunday or Monday.
Do Weekends Count Toward Your ETA?

This is where confusion often arises. Weekends typically dont count as business days for most standard shipping services but there are exceptions.
For instance:
- Royal Mail (UK) does deliver on Saturdays for many services.
- USPS (US) includes Saturday delivery in standard service.
- FedEx and UPS generally do not count Saturdays or Sundays unless you’ve paid for specific weekend delivery services.
So, if youve ever asked does Saturday count as a working day, the answer will vary based on the carrier and service type. For detailed insight, this guide explains Royal Mails Saturday policy.
How Do Holidays Affect Delivery?
National and regional holidays can add extra days to your shipping time. Most carriers suspend operations during public holidays like Christmas, New Years Day, and national observances, which means no processing or delivery takes place.
For example:
- An order placed before a long weekend might not be delivered until midweek.
- If a 3-day delivery service spans a public holiday, you may experience a delay of one or more days.
Always check the holiday calendar when estimating Electronic Travel Authorisation (ETAs), especially during peak seasons like December.
Common Carrier Working Day Policies
| Carrier | Business Days | Saturday Delivery | Notes |
| Royal Mail | MonSat | Yes (standard service) | Saturday is treated as a business day |
| USPS | MonSat | Yes | No surcharge for Saturday delivery |
| FedEx/UPS | MonFri (standard) | Optional (extra fee) | Saturdays not included in ETA |
| Amazon Logistics | MonSun (varies) | Yes (select locations) | Depends on region and delivery type |
Tips to Better Understand Shipping Timelines

- Read the fine print: Many e-commerce sites specify whether business days include the ship day.
- Factor in cut-off times: Orders placed after 24 PM are usually processed the next business day.
- Use tracking tools: Once dispatched, tracking updates give you the most accurate estimate.
- Contact customer service: If the ETA isn’t clear, don’t hesitate to reach out for confirmation.
Conclusion
When calculating shipping times, it’s not just about the number of days. it’s about which days count. Understanding whether weekends, holidays, or carrier-specific rules apply helps avoid delivery day disappointments.
Whether you’re a shopper trying to time a birthday gift or a seller managing customer expectations, knowing how to count toward your shipping ETA is key. When in doubt, always double-check with your carrier and seller for clarity especially when dealing with weekend deliveries or urgent parcels.
By knowing the rules, you’ll not only improve your delivery planning but also reduce stress and surprises along the way.
