How to check if DST (Daylight Saving Time) is in effect, and if so, the offset?

This is a bit of my JS code for which this is needed: var secDiff = Math.abs(Math.round((utc_date-this.premiere_date)/1000)); this.years = this.calculateUnit(secDiff,(86400*365)); this.days = this.calculateUnit(secDiff-(this.years*(86400*365)),86400); this.hours = this.calculateUnit((secDiff-(this.years*(86400*365))-(this.days*86400)),3600); this.minutes = this.calculateUnit((secDiff-(this.years*(86400*365))-(this.days*86400)-(this.hours*3600)),60); this.seconds = this.calculateUnit((secDiff-(this.years*(86400*365))-(this.days*86400)-(this.hours*3600)-(this.minutes*60)),1); I want to get the datetime in “ago”, but if the DST is in use then the dates are off by 1 hour. … Read more

Daylight saving time and time zone best practices [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago. The community reviewed whether to reopen this question 5 months ago and left it closed: Original close reason(s) … Read more

Daylight saving time and time zone best practices [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago. The community reviewed whether to reopen this question 5 months ago and left it closed: Original close reason(s) … Read more