I have a website with US timezone maintained in "America/Los Angels" located server. My server timezone is set as GMT. I have a table called "time zones" with GMT hour + seconds difference.
I am calculating the time based user (he will be from US region) timezone with my "time zones" table and display it. Every user will have it is own timezone to calculate all the time display. I am fine this with my timezone table.
My client says I need to consider "Daylight Savings Time" along with my table and above structure. How can I find out the daylight saving time all the time in a year and update the timezone OR calculate as per the above scenario ?
I googled and could not find how to do exactly. Can anyone help me?