Free Date and Time Data Generator

01 · Definition

What is date and time data generator?

A date and time data generator creates synthetic calendar values for tests, prototypes and fixture data. It can return ISO 8601 date-time strings, month names, weekday names and IANA time-zone identifiers, so you can exercise scheduling, filtering, expiry and localisation logic without using production records.

The tool above sends your count, locale, seed, method and method-specific options to the Spotzee Extended API, then renders returned dates[] or values[] records. Read the in-depth date generator guide for method parameters and fixture design notes.

02 · Process

How it works

1. 1Enter a count.Type the number of values to generate, from 1 to 100.
2. 2Choose a method.Pick anytime, between, betweens, birthdate, future, past, recent, soon, month, weekday or timeZone.
3. 3Set scoped options.Add ISO date-time boundaries, reference dates, age or year ranges, day or year windows, locale, abbreviations and seed values as needed.
4. 4Generate records.The server validates the count and option values, forwards a form-encoded request to /generic/data/generate/date and renders the returned values.

03 · Risk

Why it matters

Hardcoded dates in fixtures go stale. A value that was safely in the future can become a past date and break tests that check renewal, expiry or scheduling rules. A date generator online tool gives you fresh or seeded values without editing fixture files by hand.

Time-based logic needs varied inputs: boundary dates, recent activity windows, birthdate ranges, localised month labels and time-zone identifiers. A single timestamp covers one path. Generated test data helps reveal formatting, sorting, filtering and localisation assumptions before they reach production.

04 · Use cases

Common ways to use this tool

• Date field seeding. Use it as an ISO date generator for created, updated, due, renewal and expiry fields in seed data.
• Range testing. Use between, betweens, future, past, recent and soon to test date range filters and scheduling rules.
• Birthdate fixtures. Use birthdate with age or year mode to create date range generator output for profile and eligibility tests.
• Calendar label checks. Use month and weekday with locale, context and abbreviation controls to test UI labels.
• Time-zone handling. Use timeZone output to seed settings screens, import jobs and scheduling workflows that expect IANA identifiers.

05 · Interpretation

What to check in the result

• Date-only boundaries. Boundary fields must include time and offset, such as 2024-01-01T00:00:00.000Z; date-only strings are rejected.
• Wrong method for the fixture. Use recent for activity fields, future or soon for due dates, birthdate for age paths and timeZone for scheduling preferences.
• Missing range fields. between and betweens need from and to, while birthdate, future, past, recent and soon use their own scoped numeric options.
• Age and year ranges. When birthdate uses mode=age, min and max are ages; when it uses mode=year, they are years.
• String outputs. month, weekday and timeZone return strings under values[], not ISO timestamps under dates[].
• Count outside 1 to 100. For larger datasets, call the Extended API endpoint repeatedly and vary the seed if you need different batches.