Daylight Saving Time Changes

Daylight Saving Time Changes

In August of 2005 the United States Congress passed the Energy Policy Act, which changed the dates of both the start and end of daylight saving time (DST). This law went into effect in 2007. DST now starts three weeks earlier (2:00 A.M. on the second Sunday in March) and ends one week later (2:00 A.M. on the first Sunday in November) than what had traditionally occurred.

ESE responded immediately by updating the firmware and software for all new product shipped after August 19, 2005. But, this change in DST will have an impact on several of the older Master Clocks and GPS based product manufactured by ESE prior to the Energy Policy Act.

The solution for this governmental lunacy is to purchase and install a new updated micro controller. The microcontroller has a cost of $75.00 and includes installation instructions. Please call us to order a new chip. Alternatively, consider upgrading to a newer product version which has the ability to reprogram the dates through the control software. These include the ES-185E/F, ES-188E/F and ES-160E/F.

If you were unable to obtain a chip prior to the DST change, you may temporarily disable the Auto-DST function on your master and advance the time zone manually. Refer to your manual for this procedure.

DST Standard IC Locations (PDF)

IC Change Instructions (PDF)