Automatic change of clock for daylight savings time

[glarkin]

I found the procedure to setup the automatic change of time in the NTP, but I'm looking for confirmation of the date/time format. Clocks move an hour ahead on April 4th 2004 and back an hour on October 31st. Is this how the date & time should be entered for 2004?

FWTM 4 2 1 2
(4th month, 2nd week, 1st day of week, 2am)
BWTM 10 L 1 2
(10th month, last week, 1st day of week, 2am)

Please let me know if this is correct. Do I need to do this every year since the dates change? Thanks very much for your help.

Greg

 

[roupe]

FWTM should be entered 4 1 1 2
BWTM should be entered 10 L 1 2

SDST command enables auto change Enter TDST to view setup..

 

[McGruff753]

You need to correct your programming. The format is 4 1 1 2
4 = Month
1 = First
1 = Sunday
2 = 2:00 AM

The time change is 4/4/04. If you put it as 4 2 1 2, then your change would not take place unitl 4/11/04.

Meridian 1 systems operating on software release 20 or later can be programmed to automatically change between summer time and winter time.

You can check, using overlay LD 2, to see if your system is using this feature.

Log in and access overlay LD 2.

At the . prompt type
TDST

If it says SDST ON no further programming is required except to verify the settings. (NOTE 4 2 1 2 is WRONG. It needs to be 4 1 1 2.)
If you get the following it means the feature is turned off.
.TDST
SDST OFF
FWTM 0 0 (AT 00:00 0/0/2002 )
BWTM 0 0 (AT 00:00 0/0/2002 )
.

Follow this programming sequence to activate it.

Type in the following.
.FWTM 4 1 1 2
.BWTM 10 5 1 2

To activate the feature type
.SDST ON
The following will be printed.

FWTM APR 1 SUN 2 (AT 02:00 4/4/2004 )
BWTM OCT L SUN 2 (AT 02:00 31/10/2004 )

To exit from overlay LD 2 type ****

 

[glarkin]

Thanks very much for the info. The date format seems overly convoluted for such a simple process, but I appreciate the insight. Thanks,
Greg