Indian Date Format (DD-MM-YYYY with hyphen) Regex for JavaScript

What this pattern does

This page provides a well-structured, multi-part regular expression for matching indian date format (dd-mm-yyyy with hyphen), ported and verified for JavaScript. A rigorously tested regex reduces debugging time and protects your application from edge-case failures. The snippet below is ready to drop into your JavaScript project — whether you're validating in an Express middleware, a Next.js API route, or a client-side form.

Javascript Implementation

// Indian Date Format (DD-MM-YYYY with hyphen)
// ReDoS-safe | RegexVault — Localization > Date Formats

const indianDateFormatDdmmyyyyWithHyphenRegex = /^(0?[1-9]|[12][0-9]|3[01])-(0?[1-9]|1[0-2])-((?:19|20)[0-9]{2})$/;

function validateIndianDateFormatDdmmyyyyWithHyphen(input: string): boolean {
  return indianDateFormatDdmmyyyyWithHyphenRegex.test(input);
}

// Example
console.log(validateIndianDateFormatDdmmyyyyWithHyphen("15-01-2024")); // true

Test Cases

When to use this pattern

This pattern is drawn from the Localization > Date Formats category and carries a ReDoS-safe certification. That matters for JavaScript developers because especially critical in long-running Node.js event loops where a ReDoS vulnerability can block the entire process. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

Capture groups: 1=day, 2=month, 3=year. India widely uses DD-MM-YYYY and DD/MM/YYYY interchangeably. Officially, India has adopted ISO 8601 for government communications since 2004, but the DD-MM-YYYY format persists widely.