RegExLib.com - The first Regular Expression Library on the Web!

Matches the date format "YYYY-mm-dd" and also validates month and number of days in a month. All leap year dates "YYYY-02-29" passes trough. Could easily be changed to another format.

This matches timezone offsets. Also matches non-hour offsets like India (+05:30) and Nepal (+5:45}. See for more timezone information: http://en.wikipedia.org/wiki/Time_zone

This regular expressions matches dates in the format MM/YYYY where MM can be 01 to 12 and YYYY is always 4 digits long.

Matches times seperated by either : or . will match a 24 hour time, or a 12 hour time with AM or PM specified. Allows 0-59 minutes, and 0-59 seconds. Seconds are not required.

This is an new data Validation to MM/YYYY from 1900 to 2999 this is an validation expression to Client From MOnth/Year.

24 hour clock as prefered by MS-SQL, allows for shorter more human methods of writing time (no preceding zero or seconds required). MS-SQL prefers semi-colon although this accepts full stops for users ease of use.

mm/dd/yyyy hh:MM:ss Datetime for all AD years, including leap years. Javascript safe version of http://regexlib.com/REDetails.aspx?regexp_id=644. Please see that regex for details of what is being checked

Regex used in .NET to validate a date. Matches the following formats mm/dd/yy, mm/dd/yyyy, mm-dd-yy, mm-dd-yyyy This covers days with 30 or 31 days but does not handle February, it is allowed 30 days.

HHmmss without any separators. Hours in 24h format.

Fromat check for MM/YY, checks month is 1-12 and any 2 digit year.

improved date validation M/D/YY or M/D/YYYY or MM/DD/YYYY or MM/DD/YY: 1/1/1920 through 12/31/2019; Feb 29 and 30 always allowed, deal with it

Will match a date accepted by MySQL datetime type. Years with 2 or 4 digits from any range. Months with 2 digits from 00 to 12. days with 2 digits from 00 to 31. Hours with 2 digits from 00-23 Minutes with 2 digits from 00 to 59. Seconds with 2 digits from 00 to 59.

This RE validates dates in the dd MMM yyyy format. Spaces separate the values.

Jason West (jason.west@mail.state.ky.us) date validator with leap years using a strict dd/mm/yyyy (ITALIAN) format

For testing 24H based time entry. Tests if there is a colon to separate the hours from the minutes

This expression validates dates in the y/m/d format from 1600/1/1 - 9999/12/31. Follows the same validation rules for dates as my other date validator (m/d/y format) located in this library.

DateTime Validator. This RE validates both dates and/or times patterns. Days in Feb. are also validated for Leap years. Dates: in dd/mm/yyyy or d/m/yy format between 1/1/1600 - 31/12/9999. Leading zeroes are optional. Date separators can be either matching dashes(-), slashes(/) or periods(.) Times: in the hh:MM:ss AM/PM 12 hour format (12:00 AM - 11:59:59 PM) or hh:MM:ss military time format (00:00:00 - 23:59:59). The 12 hour time format: 1) may have a leading zero for the hour. 2) Minutes and seconds are optional for the 12 hour format 3) AM or PM is required and case sensitive. Military time 1) must have a leading zero for all hours less than 10. 2) Minutes are manditory. 3) seconds are optional. Datetimes: combination of the above formats. A date first then a time separated by a space. ex) dd/mm/yyyy hh:MM:ss This RE is an variation of one of my other Datetime (mm/dd/yyyy) validator already in this library http://www.regexlib.com/REDetails.aspx?regexp_id=369, so the same rules for leap year apply. All 4 digit year and all two digit years except 00, which might not be a leap year.

YYYY/MM/DD hh:mm:ss format DateTime Regex. This regex will validate a date, time or a datetime. It will also capture the date fields and the time. Dates are in the YYYY/MM/DD format and validated for months, number of days in a month and leap years (29/2) Date field can be separated by matched periods(.), dashes(-) or forward slashes(/) Time is either 12 hour AM/PM format (hh:mm:ss AM), where minutes and seconds are optional. AM or PM required. or 24 hour military format (hh:mm:ss), from 00:00:00 to 23:59:59, where hours and minutes fields are required, including leading 0 for hours less than 10. Please refer to http://blogs.regexadvice.com/mash/archive/2004/04/23/1021.aspx for additional info Datetime is the above date and time formats separated by a space, with the date first (YYYY/MM/DD hh:mm:ss) !IMPORTANT NOTE: your regex engine must support lookbehinds and named groups to use this expression

this expression validates a date-time field in European d/m/y h:m:s format. It is a european variation of Michael Ash's date-validation expression in this library. The days are validated for the given month and year. Leap years are validated for all 4 digits years from 1600-9999, and all 2 digits years except 00

Date expressions that matches MM/DD/YYYY where MM and DD must be two digits and zero padded. Validates correctly for all months except February, which it assumes to always have 29 days. The "/" separator is optional.