Checking and Setting Daylight Saving values on IT clocks

IT-900

Press and hold F1 key, then press F3 key. A number string will show on the display, release both keys.

There will be two lines of numbers on the display. On the bottom line, look at the last five digits all the way to the right. Will look like “13430”. The first two digits are the setting for when to start Daylight saving, and the next two are for when to end Daylight saving, the last digit you will not need to worry about.

So “13” is the start of DLS and “43” is the end of DLS.

To change the values, if necessary, with the number string on the display, type “1-9-0-5” on the keypad.

This will give you a cursor under the first number on the top string all the way to the left. Press either F1 or F3 key to move cursor under the digit you want to change.

Example: If you want to change the starting code for the beginning of DLS from “13” to “14”. Move cursor under the “3” then type “4” (“1 3 430” change to “1 4 430”) Then just press enter to save and exit.

Refer to code list for each year to determine what your DLS setting should be. List shows codes for beginning

And ending #'s (Updated for 2007 DLS) You will find this list at the bottom of this page.

Daylight Saving Settings for IT-900 clocks

Year Start Date DS ON# End Date DS OFF#

2005 Apr. 3rd 13 Oct. 30th 43

2006 Apr. 2nd 13 Oct. 29th 43

2007 Mar. 11th 10 Nov. 4th 44

2008 Mar. 9th 10 Nov. 2nd 44

2009 Mar. 8th 10 Nov. 1st 44

2010 Mar. 14th 10 Nov. 7th 44

2011 Mar. 13th 10 Nov. 6th 44

2012 Mar. 11th 10 Nov. 4th 44

2013 Mar.10th 10 Nov. 3rd 44

2014 Mar. 9th 10 Nov. 2nd 44

2015 Mar. 8th 10 Nov. 1st 44

© Ohio Time Corp. 2004