Lake Dallas Isd 2009-2010 Calendar https://ldisd.tandem.co/ Key dates for Lake Dallas Isd. en-us 9/7/09 Labor Day - No School https://ldisd.tandem.co/index.php?type=key_date&action=details&id=35 35-ldisd@intand.com 10/12/09 Columbus Day - No School https://ldisd.tandem.co/index.php?type=key_date&action=details&id=36 36-ldisd@intand.com 10/31/09 Halloween https://ldisd.tandem.co/index.php?type=key_date&action=details&id=37 37-ldisd@intand.com 11/1/09 Daylight Saving Time Ends https://ldisd.tandem.co/index.php?type=key_date&action=details&id=39 39-ldisd@intand.com 11/11/09 Veteran's Day https://ldisd.tandem.co/index.php?type=key_date&action=details&id=38 38-ldisd@intand.com 11/26/09 Thanksgiving https://ldisd.tandem.co/index.php?type=key_date&action=details&id=40 40-ldisd@intand.com 12/25/09 Christmas Day https://ldisd.tandem.co/index.php?type=key_date&action=details&id=41 41-ldisd@intand.com 1/1/10 New Year's Day https://ldisd.tandem.co/index.php?type=key_date&action=details&id=42 42-ldisd@intand.com 1/18/10 Martin Luther King Day https://ldisd.tandem.co/index.php?type=key_date&action=details&id=43 43-ldisd@intand.com 2/14/10 Valentine's Day https://ldisd.tandem.co/index.php?type=key_date&action=details&id=44 44-ldisd@intand.com 2/15/10 President's Day https://ldisd.tandem.co/index.php?type=key_date&action=details&id=45 45-ldisd@intand.com 3/14/10 Daylight Saving Time Begins https://ldisd.tandem.co/index.php?type=key_date&action=details&id=46 46-ldisd@intand.com