C# Time conversion to GMT(UK summer Time) with considering Day Light Saving ,Offset on UK & on Hosting Location (US)

Question

Basically I want to convert US time (hosting Server time) to GMT (UK Summer Time)

technology C#, .NET 4.0, TimeZoneInfoClass

Detailed scenario:

I am creating a SMS sending application.It should not send sms from 10.00PM to 6.30 AM UK Time or GMT.

Server resides in US or suppose anywhere in the world.

So my approach is

• I am assuming that Hosting server has Auto Day Light Adjusting Patch. So I don't check for hosting Server daylight saving. Is that Ok??

• It adjust for US time automatically & I will get correct time through UTCNow()

• I get GMT time from timezoneinfoclass or Time.UTCNow() method. Now I have correct UTC time & I have to check for Daylight saving a/c to UK time (targeted timezone)

• lastly I check parameter for targeted timezone (i.e UK) like Datetime,UTCoffset,IsDayLightSaving,SupportDaylightSaving based on Machine Time Zone ID (GMT time zone London..). eg:-timezoneid.local.searchbyma..(GMT) //*Syntax)

  if (IsDayLightSaving==true)
  {
      UTC.AddHours(1)   //syntax is not correct
  }
  else
  {
      // GMT= UK time
  }
  

OS I Have following questions :-

1. Is This a good approach or flawed one ? What are the alternatives?

2. Should I check for daylight saving for hosting timezone & then correct the offset by adding one hour if it is DST ??

3. Any free reliable web services for getting GMT time?

Please suggest

Thanks