Time & Date
How to Calculate Business Days Between Two Dates
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Updated 2026-09-19
5 min read
Key Takeaway:Plan delivery timelines and business SLA windows by counting weekdays and excluding weekend interruptions.
Calendar Days vs Business Days
A calendar day spans 24 hours regardless of day of week. A business day refers strictly to official working days—typically Monday through Friday—excluding Saturday, Sunday, and recognized government public holidays.
Frequently Asked Questions
How many business days are in an average month?
A standard month contains between 20 and 22 business days depending on calendar month length and weekend alignment.