Definition: "20090224_seoul" appears to be a reference to the Seoul, South Korea, date. Here's a detailed definition:
1.
Date
: A date is a specific event or time in history. It's typically used for events like birth, marriage, death, etc., but it can also refer to historical events such as the 20th century.
2.
Year
: The year is a four-digit number that marks the current calendar year.
3.
Month
: A month has 12 days and is denoted by a numerical value between 1-12, with January being 1 and December being 12.
4.
Day of the Week
: This is the day of the week for a given date or time. It's denoted by a number from 0 to 6. For example: Tuesday (0), Wednesday (1), Thursday (2), Friday (3), Saturday (4), Sunday (5).
5.
Year/Month/Day
: These are just the numbers, but they can be combined in any order to create specific dates or times.
6.
Time
: The time is the moment of a particular event or occurrence.
7.
Hour
: A single hour represents 24 minutes and 30 seconds.
8.
Minute
: It's a measure of one part of a full second, from 1/60th to 59/60th of a second.
For more context, the phrase "20090224_seoul" likely refers to a specific event or date in South Korean history.
20090224_seoul