Assistant: Hello! I handle your requests in natural language, such as:
“Analyze the period from November 1, 2025, to April 25, 2028.”
or
“Add 100 business days to February 25, 2026.”
or
“Next Thursday at 2:12 PM + 124 working hours”
Assistant:
I understand all languages.
How many working days in year 2099?
Here is the detail of the calculation:
Because 2099 is not a leap year, it has 365 days.
Let's remove 52 saturdays and 52 sundays. It remains 261 days.
Now, let's remove 12 public holidays that do not fall during a weekend and we obtain 249 working days in 2099.
Here is the list of these 12 public holidays:
1. New Year's Day : Thursday, 1 January, 2099
2. Seollal / Korean New Year Holiday : Tuesday, 20 January, 2099
3. Seollal / Korean New Year Holiday : Wednesday, 21 January, 2099
4. Seollal / Korean New Year Holiday : Thursday, 22 January, 2099
5. Independence Movement Day : Monday, 2 March, 2099
6. Children's Day : Tuesday, 5 May, 2099
7. Buddha's Birthday : Wednesday, 27 May, 2099
8. Chuseok / Midautumn Festival : Monday, 28 September, 2099
9. Chuseok / Midautumn Festival : Tuesday, 29 September, 2099
10. Chuseok / Midautumn Festival : Wednesday, 30 September, 2099
11. Hangeul Day : Friday, 9 October, 2099
12. Christmas Day : Friday, 25 December, 2099
And here are the 4 public holidays falling on a weekend:
1. Independence Movement Day : Sunday, 1 March, 2099
2. Memorial Day : Saturday, 6 June, 2099
3. Liberation Day : Saturday, 15 August, 2099
4. National Foundation Day : Saturday, 3 October, 2099
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