datetimeoffset

问题 I usually have an "interceptor" that right before reading/writing from/to the database does DateTime conversion (from UTC to local time, and from local time to UTC), so I can use DateTime.Now (derivations and comparisions) throughout the system without worrying about time zones. Regarding serialization and moving data between computers, there is no need to bother, as the datetime is always UTC. Should I continue storing my dates (SQL 2008 - datetime) in UTC format or should I instead store it

问题 A few months ago I was introduced to the new DateTimeOffset type and was glad DateTime's flaws with regard to time zones were finally taken care of. However, I was left wondering if there were any overhead or problems that could occur from using this new type. I work on a multi-locale web application. Does anyone know of anything that could sway me from just using it for all my date/time work? Is there a window for abuse here? Reference: DateTimeOffset: A New DateTime Structure in .NET 3.5 by

问题 I am storing schedules in the database as a day of the week, hour and minute. When the data is read we create a DateTime object for the next occurrence of that day, hour and minute, but I need to modify this to be DST-aware. I am able to modify the database if necessary. I know that DateTimeOffset stores a UTC date/time and an offset. I also know from this MSDN blog entry that DateTimeOffset should be used to "Work with daylight saving times". What I'm struggling to understand is exactly how

问题 I have a Java class that takes in the latitude/longitude of a location and returns the GMT offset when daylight savings time is on and off. I am looking for an easy way to determine in Java if the current date is in daylight savings time so I can apply the correct offset. Currently I am only performing this calculation for U.S. timezones although eventually I would like to expand this to global timezones as well. 回答1: This is the answer for the machine on which the question is being asked:

问题 I\'m trying to take a date object that\'s coming out of my Drupal CMS, subtract one day and print out both dates. Here\'s what I have $date_raw = $messagenode->field_message_date[0][\'value\']; print($date_raw); //this gives me the following string: 2011-04-24T00:00:00 $date_object = date_create($date_raw); $next_date_object = date_modify($date_object,\'-1 day\'); print(\'First Date \' . date_format($date_object,\'Y-m-d\')); //this gives me the correctly formatted string \'2011-04-24\' print(

问题 I\'m hoping to convert a table which has a DATETIMEOFFSET field, down to a DATETIME field BUT recalculates the time by taking notice of the offset. This, in effect, converts the value to UTC . eg. CreatedOn: 2008-12-19 17:30:09.0000000 +11:00 that will get converted to CreatedOn: 2008-12-19 06:30:09.0000000 or CreatedOn: 2008-12-19 06:30:09.0000000 + 00:00 -- that\'s a `DATETIMEOFFSET`, but `UTC`. Cheers :) 回答1: Converting using almost any style will cause the datetime2 value to be converted

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed last year . I am hoping to make this question and the answers to it the definitive guide to dealing with daylight saving time, in particular for dealing with the actual change overs. If you have anything to add, please do Many systems are dependent on keeping accurate time, the problem is with

问题 Currently, we have a standard way of dealing with .net DateTimes in a TimeZone aware way: Whenever we produce a DateTime we do it in UTC (e.g. using DateTime.UtcNow ), and whenever we display one, we convert back from UTC to the user\'s local time. That works fine, but I\'ve been reading about DateTimeOffset and how it captures the local and UTC time in the object itself. So the question is, what would be the advantages of using DateTimeOffset vs what we have already been doing? 回答1: