How to create a DateTimeOffset set to Midnight in Pacific Standard Time

Question

I am using Quartz.NET(http://quartznet.sourceforge.net/) and I ma trying to set start date at midnight. But I have problem with creating this date. This application will be standing on different servers in different timezones. But I want this time to be always set to midnight at Pacific Standard Time.

Here is my not working code:

    TimeZoneInfo info = TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time");       
    DateBuilder dateBuilder = DateBuilder.NewDateInTimeZone(info).AtHourMinuteAndSecond(0,0,0);           
    DateTimeOffset runTime = dateBuilder.Build();          

    IJobDetail job = JobBuilder.Create<TimeJob>()
        .WithIdentity("job1", "group1")
        .Build();

    ITrigger trigger = TriggerBuilder.Create()
        .WithIdentity("trigger1", "group1")
        .StartAt(runTime)
        .WithSimpleSchedule(x => x.WithIntervalInHours(24).RepeatForever())
        .Build();

I need to have date in DateTimeOffset format that would be midnight Pacific Standard Time. I ma using MVC 3. Any help much appreciated!

score 7 · Accepted Answer · edited Jan 09 '13 at 10:38

7

This should give you the midnight PST date irrespective of the servers.

DateTime dateInDestinationTimeZone = System.TimeZoneInfo.ConvertTimeBySystemTimeZoneId(DateTime.UtcNow, System.TimeZoneInfo.Utc.Id, "Pacific Standard Time").Date;

edited Jan 09 '13 at 10:38

LeftyX

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answered Apr 24 '12 at 16:56

Vishnu Arunachalam

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What happens if this is run during DST? – Andrew Barber Apr 24 '12 at 17:03
2

Since we are working with UTC, Day Light Savings Time (DST) will get accounted for automatically. – Vishnu Arunachalam Apr 24 '12 at 18:16

Lockszmith · Answer 2 · 2016-07-14T18:28:45.667

5

Sorry to resurrect this from the dead, but I found the solution provided by @Vishnu didn't work for me.

I am working on an EST machine, and the result of the created object, was midnight in my local time. Also, the solution mentioned didn't create a DateTimeOffset object, but a DateTime one.

I finally found a solution that worked for me, figured I'd share it here since someone else might find it useful.

var userTimeZone =
        TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time");
var startTime = new DateTimeOffset(DateTime.Today.Ticks,
        userTimeZone.GetUtcOffset(DateTime.Today) );

The trick here is using Ticks, which makes calculation very 'seamless'.

edited Jul 14 '16 at 18:28

answered Jan 20 '14 at 15:57

Lockszmith

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This answer got cut off. – Arithmomaniac Jun 17 '16 at 14:59
Sorry about that, I believe the answer contained everything. I completed the thought behind the last sentence. – Lockszmith Jul 14 '16 at 18:29

How to create a DateTimeOffset set to Midnight in Pacific Standard Time

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