REGEXVAULTv2.0
Localization/Date Formats
Verified Safe

Russian Date Format (DD.MM.YYYY) Regex for Go

/^(0?[1-9]|[12][0-9]|3[01])\.(0?[1-9]|1[0-2])\.((?:19|20)[0-9]{2})$/

What this pattern does

This page provides a well-structured, multi-part regular expression for matching russian date format (dd.mm.yyyy), ported and verified for Go. A rigorously tested regex reduces debugging time and protects your application from edge-case failures. The snippet below is ready to drop into your Go project — whether you're validating in a Gin handler, a gRPC service, or a command-line tool.

Go Implementation

Go
// Russian Date Format (DD.MM.YYYY)
// ReDoS-safe | RegexVault — Localization > Date Formats

package validation

import "regexp"

var russianDateFormatDdmmyyyyRe = regexp.MustCompile(`^(0?[1-9]|[12][0-9]|3[01])\.(0?[1-9]|1[0-2])\.((?:19|20)[0-9]{2})$`)

func ValidateRussianDateFormatDdmmyyyy(s string) bool {
    return russianDateFormatDdmmyyyyRe.MatchString(s)
}

// Example
// fmt.Println(ValidateRussianDateFormatDdmmyyyy("15.01.2024")) // true

Test Cases

Matches (Valid)
Rejects (Invalid)
15.01.202400.01.2024
1.5.202432.01.2024
31.12.199915.13.2024
01.03.20242024.01.15

When to use this pattern

This pattern is drawn from the Localization > Date Formats category and carries a ReDoS-safe certification. That matters for Go developers because Go's RE2 engine is inherently safe from catastrophic backtracking, but this pattern has been additionally verified for correctness. 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

Russia uses a Julian-to-Gregorian calendar transition (pre-1918 dates use the Julian calendar, which runs 13 days behind Gregorian in the 20th century). Historical dates require special handling.

Technical Notes

DD.MM.YYYY is the standard format in Russia, Belarus, Ukraine, Kazakhstan, and other post-Soviet states. The dot separator is a reliable locale indicator for this region. Capture groups: 1=day, 2=month, 3=year.

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