Creating a DateTimeOffset in a Timezone Different to the One the User is In-CodePudding

I want to create a DateTimeOffset which is the date that I specify, but in another timezone. There's a bit of a catch to this. 2 things:
-1- I am NOT in the TimeZone in which I am interested i.e. it is NOT my local timezone.
-2- At the time of writing, the offset in Auckland is non-standard due to Daylight savings. Normally it is 12. right now, it is 13.

So, my attempt was as follows:

var someDate = new DateTimeOffset(selectedDate, TimeZoneInfo.FindSystemTimeZoneById("New Zealand Standard Time").BaseUtcOffset);

This did not work because BaseUtcOffset always returns the standard offset i.e. 12, not 13.

How do I got about this.
Remember, before suggesting conversions to UTC etc. that I am not in that TimeZone. So any date I create on my computer will be in the E. Australia Daylight Time timezone, not New Zealand Standard Time.

CodePudding user response：

You can use this to get the correct offset on the date of whatever selectedDate is:

TimeZoneInfo.FindSystemTimeZoneById("New Zealand Standard Time").GetUtcOffset(selectedDate)

If you feed that today's date, it returns 13.

It's probably best if selectedDate is UTC. I don't know what effect it would have if it's a local time.