timezone
Converting Between Local Times and GMT/UTC in C/C++
You’re supposed to use combinations of gmtime/localtime and timegm/mktime. That should give you the orthogonal tools to do conversions between struct tm and time_t. For UTC/GMT: time_t t; struct tm tm; struct tm * tmp; … t = timegm(&tm); … tmp = gmtime(t); For localtime: t = mktime(&tm); … tmp = localtime(t); All tzset() does … Read more
Understanding the Etc/GMT time zone
Etc/GMT is not strictly the same thing as UTC or GMT. They represent the same instant in time only when the offset is 0. In all other cases, they are quite different. Apple explains the designation here. A quote directly from the link gives an example: We use POSIX-style signs in the Zone names and … Read more
Prevent timezone conversion on deserialization of DateTime value
What I did, it was to use DateTime.SpecifyKind method, as following: DateTime dateTime = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Unspecified); And this resolve my problem, I hope this help you.
save time zone in Django Models
I think the above answers are all correct, but I leave mine here as an simple example… class UserProfile(models.Model): import pytz TIMEZONES = tuple(zip(pytz.all_timezones, pytz.all_timezones)) # … timezone = models.CharField(max_length=32, choices=TIMEZONES, default=”UTC”) # …
How to group objects with timestamps properties by day, week, month?
All the solutions above are hefty, pure JS, vanilla solutions. If you’re okay to use a couple of libraries, then lodash and moment can be used together for a simple one liner: ES6 let groupedResults = _.groupBy(results, (result) => moment(result[‘Date’], ‘DD/MM/YYYY’).startOf(‘isoWeek’)); Older JS var groupedResults = _.groupBy(results, function (result) { return moment(result[‘Date’], ‘DD/MM/YYYY’).startOf(‘isoWeek’); }); This … Read more
How to work with time zones in ASP.NET?
First thing is to make sure which time zone your data is in. I would recommend making sure that any DateTime that you store, is stored in UTC time (use the DateTime.ToUniversalTime() to get hold of it). When you are to store a reminder for a user, you will need the current UTC time, add … Read more
Django: timezone.now vs timezone.now()
In python everything is an object, including functions. This means you can affect a function to a variable: >>> from django.utils import timezone >>> foo = timezone.now >>> foo <function django.utils.timezone.now> >>> foo() datetime.datetime(2016, 7, 7, 9, 11, 6, 489063) A function is a callable object: >>> callable(foo) True >>> callable(foo()) False When default receives … Read more
Local time zone offset in PostgreSQL
SELECT current_setting(‘TIMEZONE’) This can be used in a query, however, this does not give a numerical difference. Your solution is fine.