Bringing you the latest in news from 1988.
The International Organization for Standardization (ISO) created a date and time standard called "ISO 8601" it defines the date to be represented as YYYY-MM-DD.
I have personally used (most often with builds or photo folders etc) a similar format YYYYMMDD or YYYY_MM_DD as it orders in correct chronological order in "alphabetical sorting" (default file browser behavior).
Finding this "ISO 8601" standard was a cool find for me, and I will use it from now on...
As always there is a relevant XKCD: