Questions tagged [date-manipulation]
90 questions
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How to set the time in MS since 1970 to a Datetime(6) field in MySQL
I have a Java application where I get a timestamp with the call System.currentTimeInMills();
This returns values like 1331255526000.
Now I want to store these values in a MySQL database in a Datetime(6) field and I've written the following…

Fischer Ludrian
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2 answers
Using SQL DateAdd algorithm, excluding weekends
I need to write a simple query that returns three weekdays prior to a given date. I don't want to create a calendar table. Is there an algorithm that uses dateadd() and datepart() that i can use to get this result?

FistOfFury
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In MySQL, somedate - otherdate returns.. what?
I'm just curious because most DBs I ever worked with, when tasked with SOMEDATE - ANOTHERDATE return the difference in days between the two dates
MySQL seems to return a number that is.. er.. I've no idea. Sometimes it's the seconds. Sometimes it's…

Caius Jard
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1 answer
Why am I not getting an exact time when adding days to a time?
In .NET Core 6 I am getting a funny result when adding days, and it only happens in one project but not in another.
var time = 3.2986111640930176;
var firstDate = new DateTime(2023, 7, 1);
var newDate = firstDate.AddDays(time);
var ticks =…

Shumii
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1 answer
In Google Sheets I am trying to compute room occupancy per month from a list of dates
I have found numerous ways of getting parts of the result, but I'm obviously lacking in-depth knowledge of the various functions to arrive at what I need.
Sample data:
arrival | departure
11/25/2022 11/28/2022
11/30/2022 12/10/2022
12/25/2022…

Hans De Schryver
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1 answer
How to parse the date for February and months with 31 days?
I thank you for possible answers. The problem is, I work with a legacy system with Java 1.4. In a registration form you have the following fields: 'Period' in the mm / yyyy format 'Expiration Day' Concatenate the day with the period and parse for…

marcioasan
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1 answer
How to get +15 minutes date time in Javascript with dd/mm/yyyy hh:ii AM/PM format?
I have to get +15 minutes date time in Javascript with dd/mm/yyyy hh:ii AM/PM format.
And I should compare two dates, which are in dd/mm/yyyy hh:ii AM/PM format.
JS:
var date = new Date();
var hours = date.getHours();
var minutes =…

Rajasekhar
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2 answers
Java date-manipulation
I'm trying to get a date with a Month number, week of month number and a day of week number
I thought this will be easy and did this:
LocalDate nextbookingDate = LocalDate.now().plusYears(1);
nextBookingDate =…

Leon
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5 answers
Convert String to Date and remove day value (always set 1 day of month)
I can convert a String to a Date:
private static final SimpleDateFormat CARD_DATE_FORMAT = new SimpleDateFormat("yyMMdd", Locale.getDefault());
public static Date toCardDateFormat(String date){
try {
return…

ip696
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3 answers
Java LocalDate How to utilize
input list
from date ex) 2020-10-01
to date ex) 2020-10-30
List [day of week] ex) [sun,mon....]
List [week] ex) [1,4,5]
I would like to know how to get a specific day of the week…

sc m
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votes
2 answers
Determine Date This Year Based off Future Date
A bit of an odd business request just came up. We have contracts that span multiple years. The system maintains the contract's End Date. I have to determine the End Date's same calendar date, but for the current year if it hasn't passed this year,…

HardCode
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1 answer
I want to print last month last date with time stamp '23:59:59' using command
Below is my output but I want to get output like Apr 30 23:59:59.
Please suggest
date -d "$(date +%Y-%m-01) -1 day"
Output:
Tue Apr 30 00:00:00 UCT 2019
I want output: Tue Apr 30 23:59:59 UCT 2019

sreekanth rayal
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votes
2 answers
Convert date time to day zero php
one question to converting datetime type from mysql which range starts from 1001-01-01 00:00.
Problem is the day starts from 1 day but I would like to have it from 0 days.
When I subtract day with -1 I get day 30.
$data['duration'] = date('d -…

marhyno
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2 answers
Create first Instant of year 2022
I have an int representing the year 2022, and I want to create an Instant object representing the first instant of the year, meaning: 2022-01-01 00:00:00.
int year = 2022;
Instant instant = ...
How can we do that in java 8?

Hamza LAHLOU
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2 answers
What is the cleanest way to strip leading 0s from the day-of-month portion of dates?
I have this code that shows some build info in an About box:
private void frmAbout_Load(object sender, EventArgs e)
{
Version versionInfo =
Assembly.GetExecutingAssembly().GetName().Version;
lblVersion.Text = String.Format("Version…

B. Clay Shannon-B. Crow Raven
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