Find dates that read the same forwards and backwards. Discover rare palindrome dates for special celebrations and unique calendar phenomena.
Begin searching from this date
A palindrome date is a date that reads the same forwards and backwards when written in a specific numeric format. Like the word "racecar" or "level," palindrome dates are symmetrical sequences that create rare and special calendar events.
For example, in MM/DD/YYYY format, February 2, 2020 is written as 02/02/2020, which becomes 02022020 — a perfect palindrome! These dates are extremely rare, occurring only a handful of times per century depending on the format used.
Rarity by Format:
Select when to begin searching. The default is today's date, but you can start from any date in the past or future.
Different formats produce different palindromes. US format (MMDDYYYY) is rarest, while ISO format (YYYYMMDD) has more palindromes.
Choose how many years ahead to search. Longer periods find more palindromes but take slightly more time to compute.
February 2, 2020 was extraordinary because it was a palindrome in all three major formats:
This won't happen again until December 2, 2021 in MMDDYYYY format, and such universal palindromes are incredibly rare!
Upcoming in MMDDYYYY format:
After 2101, palindrome dates in MMDDYYYY format become much more frequent until 2199!
In MMDDYYYY format, there are only 12 palindrome dates per millennium in the current era! The 2000s had 12 palindromes, but the 1900s had zero. The next will be in the 3000s. In YYYYMMDD format, palindromes are more common with about one per year.
Yes! Many people celebrate palindrome dates as lucky days, schedule weddings on them, or commemorate them as mathematical curiosities. February 2, 2020 (02/02/2020) was widely celebrated worldwide as a "universal palindrome."
YYYYMMDD (ISO format) produces the most palindrome dates because the year can contribute to the palindrome structure. For example, 2021-02-02, 2020-02-02, etc. MMDDYYYY and DDMMYYYY are much rarer.
Yes, but they're formatted differently. For example, in year 11, dates like 01/01/0011 would be palindromes. However, our modern date notation wasn't standardized until much later, so these are mathematical curiosities rather than historical dates.
Yes! Times like 12:21 or 10:01 are palindromes when written as 1221 or 1001. Combine a palindrome date with a palindrome time for an extra rare moment, like 02/02/2020 at 02:02!
An ambigram date looks the same when rotated 180°. For example, 01/10/8010 using certain numeral styles. These are even rarer than palindromes and mostly theoretical curiosities since we're not yet in year 8000!
Related Tools
Track resolution progress.
Calculate age from birth date.
Calculate age gap between dates.
Calculate baby's age precisely.
Calculate exact chronological age.
Calculate lunar calendar age.