Mecosta-Osceola Isd 2025-2026 Calendar https://mecostaosceolaisd.tandem.co/ Key dates for Mecosta-Osceola Isd. en-us 9/1/25 Labor Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=378 378-mecostaosceolaisd@intand.com 10/13/25 Columbus Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=379 379-mecostaosceolaisd@intand.com 10/31/25 Halloween https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=380 380-mecostaosceolaisd@intand.com 11/2/25 Daylight Saving Time Ends https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=382 382-mecostaosceolaisd@intand.com 11/11/25 Veteran's Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=381 381-mecostaosceolaisd@intand.com 11/27/25 Thanksgiving https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=383 383-mecostaosceolaisd@intand.com 12/25/25 Christmas Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=384 384-mecostaosceolaisd@intand.com 1/1/26 New Year's Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=385 385-mecostaosceolaisd@intand.com 1/19/26 Martin Luther King Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=386 386-mecostaosceolaisd@intand.com 2/14/26 Valentine's Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=387 387-mecostaosceolaisd@intand.com 2/16/26 President's Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=388 388-mecostaosceolaisd@intand.com 3/8/26 Daylight Saving Time Begins https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=389 389-mecostaosceolaisd@intand.com 3/17/26 St. Patrick's Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=390 390-mecostaosceolaisd@intand.com 4/5/26 Easter https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=391 391-mecostaosceolaisd@intand.com 5/5/26 Cinco De Mayo https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=392 392-mecostaosceolaisd@intand.com 5/25/26 Memorial Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=393 393-mecostaosceolaisd@intand.com 7/4/26 Independence Day https://mecostaosceolaisd.tandem.co/index.php?type=key_date&action=details&id=394 394-mecostaosceolaisd@intand.com