Twosday
| Twosday | |
|---|---|
| Type | Secular | 
| Significance | Palindromic and ambigramic Gregorian calendar date marked by prevalence of the digit 2 | 
| Celebrations | Mass weddings, time capsules, sales promotions | 
| Date | February 22, 2022 | 
| Frequency | Every 400 years | 
Twosday was an unofficial one-time secular observance held on Tuesday, February 22, 2022, characterized as a fad. The name is a portmanteau of two and Tuesday, deriving from the fact that the digits of the date form a numeral palindrome marked by exclusivity or prevalence of the digit 2—when written in different numerical date formats, such as: 22/02/2022, 22/2/22 and 2/22/22. It is also an ambigram. In countries that apply the ISO 8601 international standard for the calendar, there is an additional congruence as Tuesday is the second day of the week under this scheme.