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Regex Pack: Dates, Times and Numbers

A 1-page snippet pack for matching dates, times and numbers: 10 short entries with copy-ready code.

ForDevelopers

regex-pack-dates-and-numbers.pdfShowing 10 of 39 lines
// 24-hour time
const pattern = /^(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d)?$/;
pattern.test("09:30"); // true

// 12-hour time
const pattern = /^(?:0?[1-9]|1[0-2]):[0-5]\d\s?(?:am|pm)$/i;
pattern.test("9:30 am"); // true

// US date
const pattern = /^(?:0[1-9]|1[0-2])\/(?:0[1-9]|[12]\d|3[01])\/\d{4}$/;

What's inside

Format
PDF, Markdown, JS
Contents
10 patterns
Version
1.0 · Updated 3 Oct 2026
Licence
Commercial What this means
Checked
Checked before it ships
  • regex-pack-dates-and-numbers.pdfPDF · 19 KB
  • regex-pack-dates-and-numbers.mdMarkdown · 1 KB
  • regex-pack-dates-and-numbers.jsJS · 957 B
  • LICENSE.txtadded to every download

About this item

A compact, printable snippet pack for matching dates, times and numbers. Each of the 10 entries has a one-line explanation and a small example you can paste into your editor. The PDF uses a two-column A4 layout designed to sit next to your keyboard, and the same content ships as Markdown so you can search it or drop it into your notes, plus a JavaScript module that exports every pattern. Every JavaScript example targets ES2023.

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