📅Date & Time

Business Days (Mon-Fri)

Calculating dates and differences excluding weekends.

Explanation

Many professional calculations require ignoring Saturdays and Sundays to count working days.

Examples

Date Diff (Work)
Input
Fri to Mon
Output
1 business day
Standard Week
Output
5 business days

Code Examples

JavaScript 
function isBusinessDay(date) {
  const day = date.getDay();
  return day !== 0 && day !== 6;
}

💡 Tips

  • A standard work week is 5 days
  • Don't forget to consider public holidays
  • Use Monday as the start of the business week

⚠️ Common Pitfalls

  • Business days differ by culture/religion (e.g., Fri-Sat weekends)
  • Holidays are not mathematically predictable
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