The Islamic festivals are based on Islamic calendar, determined by various moon phase sighting. The dates of the holidays change every year. The Holidays 2023 calendar is only based on estimates. The Kuwait holiday calendar cannot be guaranteed for 100 percent accuracy.
During the lunar month of Ramadan, which precedes Eid Al-Fitr, Muslims fast during the day and feast at night and there may be interruptions in normal business patterns. Several restaurants are closed during the day and there could be restrictions on smoking and drinking. This could last from two to ten days, depending on the region.
Here's the list of public holidays in Kuwait for 2023

International New Year's Day
Sunday, 1st January 2023
(Public and private sectors, and Banks in Kuwait remain closed).
National Day Kuwait
Friday, 25th February 2022
Lailat Al Miraj - The Prophet's Ascension
Saturday, 18th February 2023
National Day Kuwait
Saturday, 25th February 2023
Liberation Day Kuwait
Sunday, 26th February 2023
Eid-al-Fitr - The end of Ramadan fasting month (3 days public holidays)
Monday, 2nd May 2022 to Thursday, 5th May 2022
Eid-al-Adha - Feast of sacrifice in Islamic tradition – Qurban (3 days public holidays)
Wednesday, 28th June 2023 & Thursday, 29th June 2023
Al-Hijra - Islamic New Year
Wednesday, 19th July 2023
Milad Un Nabi - The Prophet's Birthday
Thursday, 28th September 2023
Note: Holidays in Kuwait are sometimes subject to arbitrary last-minute changes by local authorities, just as in any other part of the world. Although, effort has been made to present an accurate list of holidays for the year 2023, we cannot accept responsibility for any errors or omission of data herein. Therefore, you can verify the above dates with the embassy before planning a trip to Kuwait.