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

Title	Test Details Months
Expression	^(?:J(anuary|u(ne|ly))|February|Ma(rch|y)|A(pril|ugust)|(((Sept|Nov|Dec)em)|Octo)ber)$
Description	This RE validate the full name of the months.
Matches	January | May | October
Non-Matches	Jan | Septem | Octo
Author	Rating: Michael Ash

Title	Test Details Pattern Title
Expression	^([01]\d|2[0123])([0-5]\d){2}$
Description	HHmmss without any separators. Hours in 24h format.
Matches	235959 | 000000 | 012345
Non-Matches	240000 | 23:59:59 | 236060
Author	Rating: Dany Lauener

Title	Test Details Pattern Title
Expression	^((0?[1-9]|[12][1-9]|3[01])\.(0?[13578]|1[02])\.20[0-9]{2}|(0?[1-9]|[12][1-9]|30)\.(0?[13456789]|1[012])\.20[0-9]{2}|(0?[1-9]|1[1-9]|2[0-8])\.(0?[123456789]|1[012])\.20[0-9]{2}|(0?[1-9]|[12][1-9])\.(0?[123456789]|1[012])\.20(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))$
Description	Fully functional date validator in format dd.MM.yyyy Works only within range of years 2000-2099 ! It allows leading zeros but does not require them. The last year pattern (enumeration) is not very clever but I will improve it, if needed.
Matches	31.01.2002 | 29.2.2004 | 09.02.2005
Non-Matches	31.11.2002 | 29.2.2002 | 33.06.2000
Author	Rating: Dalibor Kalna

Title	Test Details Pattern Title
Expression	^(((((0[1-9])|(1\d)|(2[0-8]))-((0[1-9])|(1[0-2])))|((31-((0[13578])|(1[02])))|((29|30)-((0[1,3-9])|(1[0-2])))))-((20[0-9][0-9]))|(29-02-20(([02468][048])|([13579][26]))))$
Description	This expression validates a date field in the European DD-MM-YYYY format. Days are validate for the given month and year.
Matches	05-01-2002 | 29-02-2004 | 31-12-2002
Non-Matches	1-1-02 | 29-02-2002 | 31-11-2002
Author	Rating: Jörg Maag

Title	Test Details Pattern Title
Expression	^(((0?[1-9]|1[012])/(0?[1-9]|1\d|2[0-8])|(0?[13456789]|1[012])/(29|30)|(0?[13578]|1[02])/31)/(19|[2-9]\d)\d{2}|0?2/29/((19|[2-9]\d)(0[48]|[2468][048]|[13579][26])|(([2468][048]|[3579][26])00)))$
Description	MM/dd/yyyy with 100% leap years. Valid since year 1900. MM and DD could have 1 or 2 digits : M/d/yyyy or MM/d/yyyy or M/dd/yyyy This was a request from a user in http://www.regexlib.com/REDetails.aspx?regexp_id=1038
Matches	01/31/1905 | 1/9/1900 | 2/29/1904
Non-Matches	31/01/2005 | 02/29/2005 | 2/29/2005
Author	Rating: Dany Lauener

Title	Test Details Pattern Title
Expression	^([2-9]\d{3}((0[1-9]|1[012])(0[1-9]|1\d|2[0-8])|(0[13456789]|1[012])(29|30)|(0[13578]|1[02])31)|(([2-9]\d)(0[48]|[2468][048]|[13579][26])|(([2468][048]|[3579][26])00))0229)$
Description	yyyyMMdd with leap year validation, starting from year 2000 only. The length of the expression is minimized, but still validates all entries. If you want it with years like 1600 or separators, just ask :)
Matches	20000101 | 20051231 | 20040229
Non-Matches	19990101 | 20053112 | 20050229
Author	Rating: Dany Lauener

Title	Test Details Pattern Title
Expression	^([1-9]|1[0-2]|0[1-9]){1}(:[0-5][0-9][aApP][mM]){1}$
Description	Very simple expression to validate time on a 12 hour clock, this expression is valid for client-side script validations (RegularExpressionValidator - ASP.NET).
Matches	08:00AM | 10:00am | 7:00pm
Non-Matches	13:00pm | 12:65am
Author	Rating: Roberto Hernández

Title	Test Details Pattern Title
Expression	^(((0[1-9]|[12]\d|3[01])\/(0[13578]|1[02])\/((19|[2-9]\d)\d{2}))|((0[1-9]|[12]\d|30)\/(0[13456789]|1[012])\/((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])\/02\/((19|[2-9]\d)\d{2}))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$
Description	dd/MM/yyyy with leap years 100% integrated Valid years : from 1900 to 9999. As usual, many tests have been made. This was requested by a user : http://www.regexlib.com/REDetails.aspx?regexp_id=409
Matches	29/02/2000 | 30/04/2003 | 01/01/2003
Non-Matches	29/02/2001 | 30-04-2003 | 1/1/1899
Author	Rating: Dany Lauener

Title	Test Details Pattern Title
Expression	^(((((((0?[13578])|(1[02]))[\.\-/]?((0?[1-9])|([12]\d)|(3[01])))|(((0?[469])|(11))[\.\-/]?((0?[1-9])|([12]\d)|(30)))|((0?2)[\.\-/]?((0?[1-9])|(1\d)|(2[0-8]))))[\.\-/]?(((19)|(20))?([\d][\d]))))|((0?2)[\.\-/]?(29)[\.\-/]?(((19)|(20))?(([02468][048])|([13579][26])))))$
Description	Simple American date format mm-dd-yyyy or mm-dd-yy, no time. Date range is 1900 --> 2099. Is enough for my purposes. Incorectly validates 02-29-1900. I created this to validate dates on a web form where the likely range will be 2000-->2020. Seperators can be '.','/' or '-' Anyone know the rules for operator precedence for regex syntax?
Matches	02-29-2004 | 1/31/1997 | 1-2-03
Non-Matches	02-29-2003 | 04-31-2003 | 31-03-05
Author	Rating: Neil Walls

Title	Test Details Pattern Title
Expression	^((0[1-9])|(1[0-2]))$
Description	Matches month, requires that months 1-9 have a leading 0
Matches	01 | 02 | 12
Non-Matches	1 | 2 | 13
Author	Rating: Tim Macrina

Title	Test Details Pattern Title
Expression	^([0]?[1-9]|[1][0-2])[./-]([0]?[1-9]|[1|2][0-9]|[3][0|1])[./-]([0-9]{4}|[0-9]{2})$
Description	Validate american date formats: mm/dd/yyyy or m/d/yy or m.d.yyyy with separators: . - / Valid dates only! m (1-12)/ d (1-31)/ y (0..) (rizzipereira.com.br) For Brazilian date format: http://www.regexlib.com/REDetails.aspx?regexp_id=250
Matches	10.03.1979 | 12/30/2004 | 01/01/2004
Non-Matches	09--02--2004 | 15-15-2004 | 13/12/2004
Author	Rating: Diego dos Santos

Title	Test Details Pattern Title
Expression	((\d{2})|(\d))\/((\d{2})|(\d))\/((\d{4})|(\d{2}))
Description	This matches simple dates against 1 or 2 digits for the month, 1 or 2 digit for the day, and either 2 or 4 digits for the year
Matches	4/5/91 | 04/5/1991 | 4/05/89
Non-Matches	4/5/1
Author	Rating: Andrew Lader

Title	Test Details Pattern Title
Expression	^(([1-9])|(0[1-9])|(1[0-2]))\/((0[1-9])|([1-31]))\/((\d{2})|(\d{4}))$
Description	Matches U.S. dates with leading zeros and without and with 2 or four digit years
Matches	01/01/2001 | 1/1/2001 | 01/1/01
Non-Matches	13/01/2001 | 1/2/100 | 09/32/2001
Author	Rating: Chris Becker

Title	Test Details M/d/y Date
Expression	^(?:(?:(?:0?[13578]|1[02])(\/|-|\.)31)\1|(?:(?:0?[13-9]|1[0-2])(\/|-|\.)(?:29|30)\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})$|^(?:0?2(\/|-|\.)29\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:(?:0?[1-9])|(?:1[0-2]))(\/|-|\.)(?:0?[1-9]|1\d|2[0-8])\4(?:(?:1[6-9]|[2-9]\d)?\d{2})$
Description	This expression validates dates in the US m/d/y format from 1/1/1600 - 12/31/9999.
Matches	01.1.02 | 11-30-2001 | 2/29/2000
Non-Matches	02/29/01 | 13/01/2002 | 11/00/02
Author	Rating: Michael Ash

Title	Test Details Pattern Title
Expression	(^([0-9]|[0-1][0-9]|[2][0-3]):([0-5][0-9])$)|(^([0-9]|[1][0-9]|[2][0-3])$)
Description	Matches a string if it is a valid time in the format of HH:MM / H:MM / HH / H
Matches	10:35 | 9:20 | 23
Non-Matches	24:00 | 20 PM | 20:15 PM
Author	Rating: Nacho Varas

Title	Test Details Pattern Title
Expression	^\d{4}[\-\/\s]?((((0[13578])|(1[02]))[\-\/\s]?(([0-2][0-9])|(3[01])))|(((0[469])|(11))[\-\/\s]?(([0-2][0-9])|(30)))|(02[\-\/\s]?[0-2][0-9]))$
Description	- validates a yyyy-mm-dd, yyyy mm dd, or yyyy/mm/dd date - makes sure day is within valid range for the month - does NOT validate Feb. 29 on a leap year, only that Feb. CAN have 29 days
Matches	0001-12-31 | 9999 09 30 | 2002/03/03
Non-Matches	0001\02\30 | 9999.15.01 | 2002/3/3
Author	Rating: Rex Po

Title	Test Details Pattern Title
Expression	^(((\d{4})(0[13578]|10|12)(0[1-9]|[12][0-9]|3[01]))|((\d{4})(0[469]|11)([0][1-9]|[12][0-9]|30))|((\d{4})(02)(0[1-9]|1[0-9]|2[0-8]))|(([02468][048]00)(02)(29))|(([13579][26]00) (02)(29))|(([0-9][0-9][0][48])(02)(29))|(([0-9][0-9][2468][048])(02)(29))|(([0-9][0-9][13579][26])(02)(29))|(00000000)|(88888888)|(99999999))?$
Description	it's for date in the format: "yyyymmdd" and it validates the empty string and some special values (00000000,88888888,99999999) but you can delete these last values. It works with leap years.
Matches	20041212 | 20040229 | 88888888
Non-Matches	20040230 | 20041330
Author	Rating: Artu

Title	Test Details MMM dd, yyyy Date
Expression	^(?:(((Jan(uary)?|Ma(r(ch)?|y)|Jul(y)?|Aug(ust)?|Oct(ober)?|Dec(ember)?)\ 31)|((Jan(uary)?|Ma(r(ch)?|y)|Apr(il)?|Ju((ly?)|(ne?))|Aug(ust)?|Oct(ober)?|(Sept|Nov|Dec)(ember)?)\ (0?[1-9]|([12]\d)|30))|(Feb(ruary)?\ (0?[1-9]|1\d|2[0-8]|(29(?=,\ ((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)))))))\,\ ((1[6-9]|[2-9]\d)\d{2}))
Description	This RE validate Dates in the MMM dd, yyyy format from Jan 1, 1600 to Dec 31, 9999. The format is as follows: The name or 3 letter abbreivation, without a period, of the month, then a space then the day value then a comma then a space finally the year. The correct number of day are validated for each month include leap years. The name of month is case sensitive.
Matches	Jan 1, 2003 | February 29, 2004 | November 02, 3202
Non-Matches	Feb 29, 2003 | Apr 31, 1978 | jan 33,3333
Author	Rating: Michael Ash

Title	Test Details Pattern Title
Expression	^(([1-9])|(0[1-9])|(1[0-2]))\/(([0-9])|([0-2][0-9])|(3[0-1]))\/(([0-9][0-9])|([1-2][0,9][0-9][0-9]))$
Description	Dates day: d or dd, <= 31, month: m or mm, <= 12, year: yy or yyyy >= 1900, <= 2099
Matches	01/01/2001 | 1/1/1999 | 10/20/2080
Non-Matches	13/01/2001 | 1/1/1800 | 10/32/2080
Author	Rating: Scott Thompson

Title	Test Details Pattern Title
Expression	((0?[13578]|10|12)(-|\/)((0[0-9])|([12])([0-9]?)|(3[01]?))(-|\/)((\d{4})|(\d{2}))|(0?[2469]|11)(-|\/)((0[0-9])|([12])([0-9]?)|(3[0]?))(-|\/)((\d{4}|\d{2})))
Description	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.
Matches	1/31/2002 | 04-30-02 | 12-01/2002
Non-Matches	2/31/2002 | 13/0/02 | Jan 1, 2001
Author	Rating: Sean McAnally