William S. Hart Union High 2023-2024 Calendar https://williams.tandem.co/ Key dates for William S. Hart Union High. en-us 9/4/23 Labor Day https://williams.tandem.co/index.php?type=key_date&action=details&id=421 421-williams@intand.com 10/9/23 Columbus Day https://williams.tandem.co/index.php?type=key_date&action=details&id=422 422-williams@intand.com 10/31/23 Halloween https://williams.tandem.co/index.php?type=key_date&action=details&id=423 423-williams@intand.com 11/5/23 Daylight Saving Time Ends https://williams.tandem.co/index.php?type=key_date&action=details&id=425 425-williams@intand.com 11/11/23 Veteran's Day https://williams.tandem.co/index.php?type=key_date&action=details&id=424 424-williams@intand.com 11/23/23 Thanksgiving https://williams.tandem.co/index.php?type=key_date&action=details&id=426 426-williams@intand.com 12/25/23 Christmas Day https://williams.tandem.co/index.php?type=key_date&action=details&id=427 427-williams@intand.com 1/1/24 New Year's Day https://williams.tandem.co/index.php?type=key_date&action=details&id=428 428-williams@intand.com 1/15/24 Martin Luther King Day https://williams.tandem.co/index.php?type=key_date&action=details&id=429 429-williams@intand.com 2/14/24 Valentine's Day https://williams.tandem.co/index.php?type=key_date&action=details&id=430 430-williams@intand.com 2/19/24 President's Day https://williams.tandem.co/index.php?type=key_date&action=details&id=431 431-williams@intand.com 3/10/24 Daylight Saving Time Begins https://williams.tandem.co/index.php?type=key_date&action=details&id=432 432-williams@intand.com 3/17/24 St. Patrick's Day https://williams.tandem.co/index.php?type=key_date&action=details&id=433 433-williams@intand.com 3/31/24 Easter https://williams.tandem.co/index.php?type=key_date&action=details&id=434 434-williams@intand.com 5/5/24 Cinco De Mayo https://williams.tandem.co/index.php?type=key_date&action=details&id=435 435-williams@intand.com 5/27/24 Memorial Day https://williams.tandem.co/index.php?type=key_date&action=details&id=436 436-williams@intand.com 7/4/24 Independence Day https://williams.tandem.co/index.php?type=key_date&action=details&id=437 437-williams@intand.com