Did anyone notice?

[billdan]

I must admit I didn't until it was pointed out to me by the BBC.

Yesterday Sun 02 Feb 2020 is a unique palindrome 02-02-2020. Its unique because it doesn't matter whether you use dd-mm-yyyy or mm-dd-yyyy.

According to the BBC the last time it happened was 11-11-1111.

The next one will be 12-12-2121.

[h0ughy]

Bugger, missed it by that much

[OICURMT]

It's still groundhog day here... :)

02-02-2020

[JeniSkunk]

The other interesting thing about these dates is their number sequences are still palindromic when written in ISO 8601 standard date format (https://en.wikipedia.org/wiki/ISO_8601).
YYYY-MM-DD
2020-02-02

[N1]

That 1111 date has to have at least one more level of uniqueness which did not reoccur yesterday.

[Nikolas]

add to that the evening
time of 2020 and 20 seconds

[billdan]

There are also more palindromes associated with that date.

02-02-2020 is the 33rd day of the year, and because this year is a leap year, there are 333 days left in the year.

[leon]

Thanks Bill, however i did actually noticed that and made mention of it to my wife yesterday, it is very interesting

Leon

[JeniSkunk]

That doesn't work, Nik, as it's only 6 digits, whereas the date is 8 digits, making that time to be not palindromic.

To get it correct, adding in the time, it's:
ISO 8601
- 2020-02-02 20:20:02.02
- 2020020220200202

US format
- 02-02-2020 02:02:20.20
- 0202202002022020

and for December 12, 2121
ISO 8601
- 2121-12-12 21:21:12.12
- 2121121221211212

US format
- 12-12-2121 12:12:21.21
- 1212212112122121

[RAJAH235]

Hi Y'awll,
Here's another similar one that everyone may have missed...

Where were you & what were you doing at/on...?

12.34.56 secs on the 7/8/90

:)

I was repairing photocopiers at that time.

[skysurfer]

CNN also notified it.


https://edition.cnn.com/2020/02/02/world/palindrome-day-february-2-2020-intl-scli/index.html


But that it is the first in 909 years is wrong.
When using d-m-y format (which they also include), 20 Feb 2002 was the last one, 18 years ago: 20-02-2002.

And the next one is only two years away: 22-02-2022 and then ten: 23-02-2032





And what about timestamps (seconds since 1 Jan 1970) ?


1600000061 Sun 13 Sep 2020 12:27:41 UTC
1590000951 Wed 20 May 2020 18:55:51 UTC
1581111851 Fri 7 Feb 2020 21:44:11 UTC


And much more ....

[billdan]

But that it is the first in 909 years is wrong.
When using d-m-y format (which they also include), 20 Feb 2002 was the last one, 18 years ago: 20-02-2002.

I think you missed the point, being that 02-02-2020 is a unique palindrome and works in all date formats and the last one was 909 years ago.

Your example 20-02-2002 only works in dd-mm-yyyy format.

[JeniSkunk]

Bill, I think you typoed it.
Isn't it supposed to be 20-02-2002?

[FlashDrive]

In 1977 while in the Airforce on a day at Williamtown AFB ( 77SQN ) the date ' clicked over ' 7th of the 7th ...77

7-7-77

It will never be repeated :thumbsup:

Col....

[billdan]

Whoops - thanks Jenifur, I'll edit the post.