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### Need function to find difference between two dates

Hi all

I need a function written in vb to find the exact month difference between two dates.

For example

Start Date : 01/01/2010

End Date   : 15/02/2010

then the difference value should be like this 1.5  i.e i need the difference in decimal value.

### how i can calculate date difference in oracle

how i can calculate the date diff in Oracle 10g using pl sql developer 7thank you

### calculate business day between two dates

Hi Guys   I need the count of business days between two  dates Date1, Date2 i need the count only business day (exclude sartuday&sunday) If date1 is null or nothing i need to pass 0 If date2 is null or nothing i need to pass 0   help on this

### How do i calculate no of days between two given dates

Dear All, My requirement is used to find no of days between two given dates and time(from date and to date). using c#. Thanx in advance Dinesh

### How can I calculate the Number of Weekends between two dates

I need to be able to figure out the number of Saturdays and the number of Sundays between two dates.  I know that I can do this by looping through the series of dates between the start date and end date.  Years ago I saw a piece of code that an ex-co worker wrote that accomplished this task using a formula.  The formula was extemely effecient.  Unfortunately I no longer have access to this code.  Does anyone have an algorithm that will perform this calculation that I can make use of?  Thanks

### How do i calculate no of days between two dates n two times Using C#

Dear All, i got the task to find no of days between two dates n Two given times Using C# I have four fields( columns) Such as follows, Arrival Date, Arrival Time, Leaving Date and Leavingtime. Example: Leaving Date-24/08/2010,Leaving Time- 08:00 , Arrival Date- 12/09/2010 ,Arrival Time-16:00, From the above Example i need to find No of days. Note : Days should calculate from Leaving time to arrival time (with reference to above example it means if he starting at 8:00 o clock(24/08/2010)  in the morning the next day eight o clock will be one day(8:00/ 25/08/2010)) Thanx in advance

### How can I calculate the Number of days between two dates Monday to Friday

`    I am using following code for Robert's Posted Code (Url:http://forums.asp.net/t/1142378.aspx) But this is for only calculate weekends saturday and sunday can any one tell me how     I get Number of days between given two dates Monday to Friday.`

```            private const int MONDAY = 1;
private const int TUESDAY = 2;
private const int WEDNESDAY = 3;
private const int THURSDAY = 4;
private const int FRIDAY = 5;
private const int SATURDAY = 6;
private const int SUNDAY = 7;

/// <summary>
/// Observe that the method calculates by including the start day, but excludes the end day
/// </summary>
/// <param name="startDate"></param>
/// <param name="endDate"></param>
/// <returns></returns>
private void GetWeekendDaysBetween(DateTime startDate, DateTime endDate,out int saturdays,out int sundays)
{
saturdays = -1;
sundays = -1;
if (endDate < startDate)
return;
TimeSpan timeBetween = endDate.Subtract(startDate);
int weekendsBetween = timeBetween.Days / 7;
sundays = ```

### Get Difference between two dates as Hours, Minutes

Hi,

I am using the below query to get difference beiween two dates in hours and minutes.Minutes part look ok but the hours is incorrect.

select datediff(minute,LastDate,getdate()) as "Minutes", datediff(hour,LastDate,getdate()) as "Hours"from emp.

Note: Using SQL Server 2005

Regards
Janet

### How to calculate working hours betwwen two dates?

Working days - Mon-Fri and Working hours - 9 Am to 5 Pm

Date1                                       Date2                                                Working Hours

Thur, 14-Oct-10 11.30 Am          Thur, 14-Oct-10 5.00 Am                     5.30

Fri,  15-Oct-10 11.30 Am            Mon, 18-Oct-10 5.00 Am                      13.30

Mon,  18-Oct-10 11.30 Am          Mon, 18-Oct-10 6.00 Am                      5.30

Thanks & Regards, PSWA

### Get difference between 2 dates in minutes

I have 2 datetime columns:

Date1 = 10/1/2010 11:00:00 PM

Date2 = 10/2/2010 1:00:00 AM

I want to subtract Date 2 from Date1 and return the number of minutes difference.  Something like:

Date1 - Date2 = 120

How can I do this?

Thanks,

Bob

### Months and Years between given two dates.

Hello All,

I have one query.

User will input two dates and I want to print months between those two dates.

1. Suppose user enters From Date : 1-Apr-2010 and To Date : 15-Oct-2010

So my out put should be like

April

May

June

July

August

September

October

Please reply me sql query for that one as it is needed on urgent bases.

### How to calculate total work hours between dates?

I am in the process of creating a calendar.  This calendar is to track leave hours for employees.  For example if a person takes leave for 2.5 days then the formula would calculate 8hrs per day and 4 hours for half a day = 20hrs.  I have part of the formula I believe "=TEXT([End Time]-[Start Time],"h")".  The problem is that it does not count multiple days and just not working right. Any advice would help.
Qjm

### How to create a calculation in a list - Calculate the number of days between two dates

I have a calculated column in a list called Days Open. This column contains the number of days between today (Sysdate) and another column called the Effective Date. Therefore, if Sysdate is 11/16/2010 and the Effective Date is 10/14/2010, how do I calculate the number of days between the two dates?

I tried using this formula: =TEXT(Sysdate-[Effective Date],"h") and then I tried =INT(Sysdate-Effective Date) & TEXT(Sysdate-Effective Date, ":hh:mm")

Neither formula worked. I hope it is something real simple that I am missing here. Any help you can provide will be highly appreciated!

### Calculate delta difference in the same table

Hello,

The following is the table creation and records insertion script

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE TABLE [dbo].[students] (
[studentid] [int] NULL,
[paymentdate] [date] NULL,
[pmtamt] [decimal](20, 2) NULL
) ON [PRIMARY]

GO

INSERT INTO [students] ([studentid] ,[paymentdate] ,[pmtamt])
VALUES
('1','2009-06-03','135.00'),
('2','2008-03-02','456.78'),
( '1','2008-06-03','654.00'),
('1', '2007-04-08','7895.00'),
('1','2010-06-03','427.00'),
('2','2009-07-08','3544.00'),
('3','2010-07-08','564.00'),
('3','2009-06-08','423.54'),
('3','2007-03-08','2342.00')

I need to find out the delta difference in payments between different years for each student.

I have been working on the following code

select A.studentid
, A.[year] , b.[year],
a.avgpmtamt,

### What is the difference between "dynamic" and "object" keywords?

Let's take a quick look at the object keyword first. I'm not going to talk a lot about it because it's been around since C# 1.0. This keyword is nothing more than a shortcut for System.Object, which is the root type in the C# class hierarchy. (However, as Eric Lippert pointed out in his blog post, not everything in C# derives from object.) This is a powerful mechanism, since you can assign almost any value to instances of this type.

### AGE CALCULATION IN YEARS AND MONTHS

How to calculate childs age,but when i enter childs age as '03/27/2007' it returns 3 years where as actual age is 2 yr 11 months

### Calculate distance, bearing and more between Latitude/Longitude points

This page presents a variety of calculations for latitude/longitude points, with the formulÃÂ¦ and code fragments for implementing them.

All these formulÃÂ¦ are for calculations on the basis of a spherical earth (ignoring ellipsoidal effects) - which is accurate enough* for most purposes. [In fact, the earth is very slightly ellipsoidal; using a spherical model gives errors typically up to 0.3% - see notes for further details].
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