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Please take a moment to review our 2025 holiday closure schedule to plan ahead. Wishing you a joyful season and a wonderful start to the new year!

As the holiday season is approaching, we would like to inform you of our upcoming ISEH Headquarters office schedule through the end of 2025. Please note that our Headquarters office will be closed on the following dates:

26-28 November
24 December through 1 January 2026

Our office hours will remain 09:00 – 17:00 US Central Time (Chicago, USA), Monday through Friday, on all other dates.

Thank you for your understanding. On behalf of ISEH, we wish you a wonderful holiday season and a Happy New Year!