Cumulus Support

To get the clock adjusting for daylight savings time between the first Sunday in October and the first Sunday in April (which is when it applies here) I added:

// code to adjust for daylight saving time
 var gmt = new Date;var lsm = new Date;var lso = new Date;
 lsm.setMonth(3);lsm.setDate(7);
 var day = lsm.getDay();lsm.setDate(7-day);
 lso.setMonth(9);lso.setDate(7);
 day = lso.getDay();lso.setDate(7-day);
 if (gmt < lsm || gmt >= lso) dst = 1; 

beteljuice wrote: ... be warned the beteljuice always has problems with dates no matter what the code

Here (in Sydney) we usually go onto daylight savings time at 2am on the last Sunday in October and back to standard time at 3am on the last Sunday in March. The following code will perform this switch at midnight visitor local time on those dates which is within a day of the correct time for the change. (To be more accurate than this would require about three times as much code which I don't think is worth it in this instance).

var gmt = new Date;
 var lsm = new Date;
 var lso = new Date;
 lsm.setMonth(2); // March
 lsm.setDate(31);
 var day = lsm.getDay();// day of week of 31st
 lsm.setDate(31-day); // last Sunday
 lso.setMonth(9); // October
 lso.setDate(31);
 day = lso.getDay();
 lso.setDate(31-day);
 if (gmt < lsm || gmt >= lso) dst = 1; 

You would of course need to change the code to determine the appropriate dates for your local circumstances. Note that the month numbers run 0 = January through 11 = December and not 1 through 12.

... be warned the beteljuice always has problems with dates no matter what the code

duke wrote: Therefore,

... be warned the beteljuice always has problems with dates no matter what the code

not true .

// if (gmt > lsm || gmt < lso) dst = 1; 
// should be

if (gmt > lsm && gmt < lso) dst = 1; 

// code to adjust for daylight saving time
// mod by beteljuice to get last Sunday of month(s)
var gmt = new Date;var lsm = new Date;var lso = new Date; var dst=0;
lsm.setMonth(2);lsm.setDate(31); // 'Summer' start 2 = March which has 31 days
var day = lsm.getDay();lsm.setDate(31-day); // find the date of last Sunday in month
lsm.setUTCHours(0, 59, 59, 0); // clocks change 01:00 hrs UTC
lso.setMonth(9);lso.setDate(31); // 'Winter' start 9 = October which has 31 days
day = lso.getDay();lso.setDate(31-day); // find the date of last Sunday in month
lso.setUTCHours(0, 59, 59, 0); // clocks change 01:00 hrs UTC
if (gmt > lsm && gmt < lso) dst = 1; 

beteljuice wrote: but if you are feeling brave you could try:

Code: Select all

// code to adjust for daylight saving time
// mod by beteljuice to get last Sunday of month(s)
var gmt = new Date;var lsm = new Date;var lso = new Date; var dst=0;
lsm.setMonth(2);lsm.setDate(31); // 'Summer' start 2 = March which has 31 days
var day = lsm.getDay();lsm.setDate(31-day); // find the date of last Sunday in month
lsm.setUTCHours(0, 59, 59, 0); // clocks change 01:00 hrs UTC
lso.setMonth(9);lso.setDate(31); // 'Winter' start 9 = October which has 31 days
day = lso.getDay();lso.setDate(31-day); // find the date of last Sunday in month
lso.setUTCHours(0, 59, 59, 0); // clocks change 01:00 hrs UTC
if (gmt > lsm && gmt < lso) dst = 1; 

Could someone outside GMT+1 please check it shows UK time and not your own time zone please?