Date Pattern Calculator

Want to know if the digits in a date are sequential, repetitive, or can be read the same way forwards and backwards? Use the Date Pattern Calculator to find out unique and interesting mathematical patterns in different date formats.

Click on Advanced options to select a different pattern type, change the date order, include the time, and more.

11 patterns found for Tuesday, December 31, 2019

Click on any row to see an animation of the date pattern.

Readable Date	Order of Date	Grouped as Date	Grouped as Pattern	Type
Dec 31 at 12:13:21 am	MM-DD HH:MI:SS	12-31 00:13:21	12310-01321	Palindrome (reverse)
Dec 31 at 12:21:13 am	DD-MM HH:MI:SS	31-12 00:21:13	31120-02113	Palindrome (reverse)
Dec 31, 2019 at 1:13:21 am	MM-DD-YY H:MI:SS	12-31-19 1:13:21	12311-9-11321	Palindrome (reverse)
Dec 31, 2019 at 1:21:13 am	DD-MM-YY H:MI:SS	31-12-19 1:21:13	31121-9-12113	Palindrome (reverse)
Dec 31 at 11:13:21 am	MM-DD HH:MI:SS	12-31 11:13:21	12311-11321	Palindrome (reverse)
Dec 31 at 11:21:13 am	DD-MM HH:MI:SS	31-12 11:21:13	31121-12113	Palindrome (reverse)
Dec 31 at 1:21 pm	MM-DD HH:MI	12-31 13:21	1231-1321	Palindrome (reverse)
Dec 31 at 9:13 pm	DD-MM HH:MI	31-12 21:13	3112-2113	Palindrome (reverse)
Dec 31 at 10:13:21 pm	MM-DD HH:MI:SS	12-31 22:13:21	12312-21321	Palindrome (reverse)
Dec 31 at 10:21:13 pm	DD-MM HH:MI:SS	31-12 22:21:13	31122-22113	Palindrome (reverse)
Dec 31 at 11 pm	MM-DD HH	12-31 23	123-123	Repeats 3 x 2

The results table highlights the dates that are most interesting and easiest to read in green. The type of pattern shows whether the date is a reversible date (palindrome) or repeatable date.

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