The E4IS offices are open Monday - Friday 8:00 AM to 5:00 PM CDT.
May - August (Summer Hours): E4IS offices will close Friday's at 12:30 PM CDT.
Dates below indicate holidays the E4IS offices will be closed.
All communications will be returned by staff on the next business day.
2026
January 1: New Year’s Day
February 16: President’s Day
April 3: Good Friday
May 25: Memorial Day
June 19: Juneteenth
July 3: Independence Day
September 7: Labor Day
November 26-27: Thanksgiving
December 24-25: Christmas
2027
January 1: New Year’s Day
February 15: President’s Day
March 26: Good Friday
May 31: Memorial Day
July 5: Independence Day
September 6: Labor Day
November 25: Thanksgiving
December 24: Christmas