DateTime parsed differently in different environments?

I am inserting some data into a SharePoint list (via web services) and on my local machine I set a date field like this (hard coded in this example)

<Field Name='TimeOnScene'>" + DateTime.Parse("13/12/2011 1:00").ToString("yyyy-MM-ddTHH:mm:ssZ") + "</Field>

and it works fine on my local machine, but if I publish it to our web host and run the exact same code I get

{"Message":"String was not recognized as a valid DateTime.","StackTrace":"
//
//
 System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles开发者_StackOverflow styles)\r\n   at System.DateTime.Parse(String s)\r\n   "ExceptionType":"System.FormatException"}

How is this possible?

Thanks in advance.

Edit:

we also moved from host to another two weeks ago and never had this issue before.

Use DateTime.ParseExact instead of Parse, the converting will be like the following code.

CurDate = DateTime.ParseExact(YourDateString, "dd/MM/yyyy hh:mm", System.Globalization.CultureInfo.CurrentCulture, System.Globalization.DateTimeStyles.None)

The host could have different local in set on there machine. in the documentation The string s is parsed using formatting information in the current DateTimeFormatInfo object, which is supplied implicitly by the current thread culture.