Create a Date with a set timezone without using a string representation

Question

I have a web page with three dropdowns for day, month and year. If I use the JavaScript Date constructor that takes numbers, then I get a Date obje

Answer 1

SOLVED:

When I create a date object:

new Date(year, month, day, hour, minute)

I works fine on localhost. When I deploy to server it breaks, because server is in another timezone.

I can't use getTimezoneOffset(). I need the timezoneOffset of my home - dependent on summertime/wintertime

// add diff minutes between myself (HOME) and server 
timezoneHomeOffset (d, tz = 'Europe/Copenhagen') {
  const utc = new Date(d.getTime())
  const dHome = new Date(d.toLocaleString('en-US', { timeZone: tz }))
  const diff = Math.round((utc - dHome) / 60000) // 60*1000 => minutes
  d.setMinutes(d.getMinutes() + diff)
  return d
}