I need to ALWAYS stamp my DB with Pacific Time, regardless if it's August or February. Pacific Time is, the actual US west coast time at anytime of the year:
I am using C# and do the following:
TimeZoneInfo pacificZone = TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time");
CreatedDate = TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow, pacificZone);
Would that automatically take into account Daylight saving times, or do I need to account for this by doing this:
TimeZoneInfo pacificZone = TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time");
CreatedDate = TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow, pacificZone);
if (!TimeZoneInfo.Local.IsDaylightSavingTime(CreatedDate))
{
CreatedDate = CreatedDate.AddHours(-1);
}
Is my first or 2nd code snippet the correct one?
The first block is the correct one.
var utcDateDuringDaylightSavingsTime = new DateTime(2018, 7, 1, 15, 30, 30, DateTimeKind.Utc);
TimeZoneInfo pacificZone = TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time");
var localDateDuringDaylightSavingsTime = TimeZoneInfo.ConvertTimeFromUtc(utcDateDuringDaylightSavingsTime, pacificZone);
var localDateNotDuringDaylightSavingsTime = TimeZoneInfo.ConvertTimeFromUtc(utcDateDuringDaylightSavingsTime.AddMonths(5), pacificZone);
Console.WriteLine(utcDateDuringDaylightSavingsTime.ToString("o") + "\t\tUTC");
Console.WriteLine(localDateDuringDaylightSavingsTime.ToString("o") + "\t\t Local during daylight saving");
Console.WriteLine(localDateNotDuringDaylightSavingsTime.ToString("o") + "\t\t Local not during daylight saving");
Output
2018-07-01T15:30:30.0000000Z UTC
2018-07-01T08:30:30.0000000 Local during daylight saving
2018-12-01T07:30:30.0000000 Local not during daylight saving
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