Odd and even dates

Bet you didn't think about this: when was the last date com­posed of ONLY odd num­bers, and when's the next?

Bet you didn't think about this: when was the last date com­posed of ONLY odd num­bers, and when's the next?

The Fri­day 1999-11-19 was the last ODD DATE (all dig­its odd) for a very long time.

Now, the next odd day will be 3111−1−1, or if you want to be ISO-date-strict, first in 3111−11−11.

We have now entered a period of even dates, the first one appeared 2000-02-02, the first since 888−08−28.

What we can say for now is that we will now have a lot of even dates until 2888-08-28 and then again we will have a gap of 1111 years until 4000−02−02, when there is an even period again. Between 3111−11−11 and 3999−11−19 there will be a period where odd dates will appear.

Worth­while to note also is that 1999-11-19 is a prime date.