i am really aware about daylight saving ,
just couple of weeks back only, i thinking about the daylight saving,
How to set date and time when Daylight start and how much we hour we should add and how much
hours we subtract and when should we do this,
What are that EDT, EST and all,
i am totally struck with this. what are formula behind in this?
is there any simple explanation there,
Why india does not have DST,
is there any connection with word map for day light saving.
preguntado el 27 de agosto de 11 a las 17:08
There isn't a formula. Different countries implement it as per their own requirements.
Use a look up table to deal with it. Better yet, don't. Any quarter-decent date-time library will handle it for you.
For example, since you have tagged this perl, Ver el DateTime module. Specifically the is_dst method.
Returns a boolean indicating whether or not the datetime object is currently in Daylight Saving Time or not.