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Validation
Validate date and time formats including ISO8601, custom formats, leap year, and month/day validation
Execution
Fill in the form, run the tool, and review the result in one place.
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Tool usage guide
The Date & Time Validator is a utility tool that checks the validity of date and time strings against various formats, including ISO8601, Unix timestamps, and RFC2822. It performs leap year and month/day validation to ensure accuracy.
Background
A web developer is integrating an API that returns date data in ISO8601 format.
Problem
The API response might contain malformed dates that need verification.
How to use
Enter the date string '2024-01-15T10:30:00Z' in the Date/Time field and select 'ISO8601' from the Format dropdown.
Outcome
The tool confirms the date is valid and correctly formatted as ISO8601.
Background
A data analyst is cleaning a dataset with date entries that include February 29.
Problem
Some dates might be invalid if the year is not a leap year.
How to use
Input the date '2024-02-29' and select 'Date only' format to validate.
Outcome
The tool validates that 2024 is a leap year, so February 29 is accepted as valid.
It supports ISO8601, date-only, time-only, Unix timestamps, and RFC2822 formats.
The tool automatically checks if dates like February 29 are valid for leap years.
No, the tool validates one date or time string per use.
It attempts to identify the format of the input string based on common patterns.
The tool accepts standard date/time strings, but extremely long or malformed inputs may not process correctly.