datetime

How to determine if birthday or anniversary occured during date range

Given I have a birthday/anniversary DateTime, how can I determine if that date occurred during a specific date range? For example, Birthday = 1/2/2000 Date Range = 12/25/2008 - 1/3/2009 I need a method to determine whether or not this person's birthday happened during that date range - preferably in C#. I first went about changing the...

Oracle get previous day records

Ok I think I'm getting the previous year instead of the previous day, but I need to previous day. SELECT TO_DATE(TO_CHAR(CURRENT_DATE, 'YYYY-MM-DD'),'YYYY-MM-DD') - 1 FROM Dual I'm comparing it to a datetime stamp in this format and wish to get all the rows from the previous day. YYYY-MM-DD HH:MM:SS So I'm trying something like thi...

Robust DateTime parser library for .NET

Hello, I am writing an RSS and Mail reader app in C# (technically MonoTouch). I have run into the issue of parsing DateTimes. I see a lot of variance in how dates are presented in the wild and have begun writing a function like this: static string[] DateTimeFormats = new string[] { "ddd, d MMM yyyy H:mm:ss \"GMT+00:00\"", "d MM...

Python dealing with dates and times

I'm looking for a solution to the following: Given today's date, figure out what month was before. So 2 should return for today, since it is currently March, the third month of the year. 12 should return for January. Then based on that, I need to be able to iterate through a directory and find all files that were created that month. ...

How to get a different Timezone in .net with code

hi there There must be a simple way to get different timezones with code (ie without changeing your system timezone) So far you can do something like var timezone = TimeZone.CurrentTimeZone; but I cant see any other way to get a different timezone? or should I just use TimeSpan? Actually it seems like it s a better idea to use Tim...

How to store and compare time-zone sensitive times

I have a data structure where an entity has times stored as an int (minutes into the day) for fast comparison. The entity also has a Foreign Key reference back to a TimeZone table which contains the .NET CLR ID Name and it's Standard Time/Daylight Time acronyms. Since this information is stored as time-zone insensitive - I was wonderin...

How to validate a string as DateTime using FluentValidation

With FluentValidation, is it possible to validate a string as a parseable DateTime without having to specify a Custom() delegate? Ideally, I'd like to say something like the EmailAddress function, e.g.: RuleFor(s => s.EmailAddress).EmailAddress().WithMessage("Invalid email address"); So something like this: RuleFor(s => s.DepartureD...

compare datetime in find conditions

Hi, I am trying to get all users that are updated maximum 90 seconds ago: User.find(:all, :include => { :core => :image }, :conditions => ["updated_at > ?", Time.now - 90.seconds] ) But it doesn't work. why? how can i do? thanks ...

Changing timezone in MSYS

Hello, how can I change timezone on MSYS+MinGW for Windows if I have only "date" command installed? There are no "tzconfig" or "tzselect" here. When I try $date --set="Apr 01 23:08 UTC+04:00" I receive 19:08 GMT+0 result. This is very important for me because "make" command always gives me errors about files modified in future. ...

Store more than 24 hours in a DateTime

I work in a bizarre and irrational industry where we need to be able to represent the time of day as 06:00:00 to 30:00:00 instead of 0:00:00 to 24:00:00. Is there any way to do this using the DateTime type? If I try to construct a date time with an hour value greater than 24 it throws an exception. ...

How to get the Time value from datetime picker

how to get the time value in a stored procedure form datepicker value i.e i have a datetime picker value stored into my table as '2010-04-06 09:00:00.000' '2010-04-07 14:30:00.000' i have got the date sepeartely using convert(varchar,Date,3) as Date.. i have got the time seperately using convert(time,Time) but it show the values as...

Format date function in .NET

Is there an inbuilt .NET date formatting function to return a date in the format: 3rd April 2010 It's the "rd" bit that I cannot recollect whether there is a formatting option. Cheers, Rob. ...

One hour difference in Python

Hello, I have a datetime.datetime property var. I would like to know if it is less than one hour of the current time. Something like var.hour<datetime.datetime.today().hour - 1 Problem with the above syntax is that datetime.datetime.today().hour returns a number such as "10" and it is not really a date comparation but more of a n...

How do I output an ISO-8601 formatted string in Javascript?

I have a date object from which I'd like to render an HTML snippet like <abbr title="2010-04-02T14:12:07">A couple days ago</abbr>. I have the "relative time in words" portion from another library. How do I render the title portion? I've tried the following: isoDate: function(msSinceEpoch) { var d = new Date(msSinceEpoch); return d...

Checking the time in Objective-c?

how can I get the current time in hh:mm format? I need to be able to tell between AM and PM and compare between the current time and a second time as well. I'm sure it's a silly function but i can't seem to figure it out. ...

How to calculate how many business days are between two dates?

A friend asked me yesterday if this was possible on the iPhone. I took a look at NSCalendar and all the related Classes but couldn't find a solution to this. So I thought about this approach: If I had two dates dateA and dateB, I would have to make a for-loop and iterate over every single day in this interval. Then I would count the bus...

strftime doesnt display year correctly

Hi guys, i have the following code below: const char* timeformat = "%Y-%m-%d %H:%M:%S"; const int timelength = 20; char timecstring[timelength]; strftime(timecstring, timelength, timeformat, currentstruct); cout << "timecstring is: " << timecstring << "\n"; currentstruct is a tm*. The cout is giving me the date in the correct forma...

How do I deep copy a DateTime object?

$date1 = $date2 = new DateTime(); $date2->add(new DateInterval('P3Y')); Now $date1 and $date2 contain the same date -- three years from now. I'd like to create two separate datetimes, one which is parsed from a string and one with three years added to it. Currently I've hacked it up like this: $date2 = new DateTime($date1->format(Dat...

Parsing RFC1123 formatted dates in C#, .Net 4.0

Hello, I am trying to parse dates in RFC1123 format (Thu, 21 Jan 2010 17:47:00 EST). Here is what I tried but none worked: DateTime Date = DateTime.Parse(dt); DateTime Date = DateTime.ParseExact(dt, "r", null); Could you please help me out with this? Thanks, Ruby :) ...

Storing date/times as UTC in database

I am storing date/times in the database as UTC and computing them inside my application back to local time based on the specific timezone. Say for example I have the following date/time: 01/04/2010 00:00 Say it is for a country e.g. UK which observes DST (Daylight Savings Time) and at this particular time we are in daylight savings. Wh...