How to combine date and time into a single datetime object?

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In my react native app i need to combine my date and time in to single datetime object. I used react native modal date time picker npm package for get date and time.

I have a datepicker returning a date string, and a timepicker returning a time string. When i try to combine it will give me a output as Invalid date.

concatDateTime = () => {

    var date =;
    var time = this.state.currentTime;

    var dateTime = Moment(date + ' ' + time, 'DD/MM/YYYY HH:mm');

    console.log(dateTime.format('YYYY-MM-DD HH:mm'));

I need dateobject in ('YYYY-MM-DDTHH:mm:s') format.

You can specify the format of your input string to let moment know how to parse it.

var date = '2019-02-16';
var time = '8:24 PM';

// tell moment how to parse the input string
var momentObj = moment(date + time, 'YYYY-MM-DDLT');

// conversion
var dateTime = momentObj.format('YYYY-MM-DDTHH:mm:s');

<script src=""></script>

combine date and time into a single datetime, Pass your date and time to this function. It will return the Date object. Use getTime () on that to get the desired result. Codepen example. function� Return the current UTC date and time, with tzinfo None. This is like now(), but returns the current UTC date and time, as a naive datetime object. An aware current UTC datetime can be obtained by calling See also now().

Just click on below link,

I hope it will solve your problem.

How to combine Date and Time objects into DateTime object , Another, shorter way is. Append[d, t]. Mathematica graphics. From the docs,. DateObject[date,time] represents the specified date list and TimeObject time. Combine date and time with Kutools for Excel. With above formula, you may lost the formula result when you edit the worksheet. Now I introduce a Combine Rows, Columns or Cells without Losing Data utility of Kutools for Excel for you to directly combine the data and time cells into one.

Another alternative:

let mDate = moment(data.StartDateLocal).tz("Australia/Melbourne");
let mTime = moment(data.StartTimeLocal).tz("Australia/Melbourne");
let x1 = {
    'hour':    mTime.get('hour'),
    'minute':  mTime.get('minute'),
    'second':  mTime.get('second')
this._json.header.transactionStartDateTime = mDate.format("YYYY-MM-DDTHH:mm:ss");

Combining Data from Separate Columns into a Single Date and , Combining Data from Separate Columns into a Single Date and Time Value. Concatenate: Using &: Combining Date and Time Value from separate Columns into a single Cell. Formula 1: =TEXT(A1,"dd/mm/yyy")&" "&TEXT(B1,"hh:mm:ss") Formula 2: =a1+b1. combine_date_time(df, 'Date', 'Time') I have timed both approaches for a relatively large dataset (>500.000 rows), and they both have similar runtimes, but using combine is faster (59s for replace vs 50s for combine ).

How to combine date and time into one cell in Excel?, There is a very simple formula that can quickly help you combine date column and time column into one. Tip: You also can use this formula =A2+B2 and then format the result cells as date and time formatting. A datetime object is a single object containing all the information from a date object and a time object. Like a date object, datetime assumes the current Gregorian calendar extended in both directions; like a time object, datetime assumes there are exactly 3600*24 seconds in every day.

Combining Date and Time variables (class, Combining Date and Time variables (class - datetime) into 1 DateTime (class - double) How do I now combine Date2 and Time2 to make one DateTime array ? I tried including a format specification in the datenum code line but kept on� I'm currently working in tick data with R and I would like to merge date and time into a single object as I need to get a precise time object to compute some statistics on my data. Here is how my data looks like:

In this article, you will learn to manipulate date and time in Python with the help of 10+ examples. You will learn about date, time, datetime and timedelta objects. Also, you will learn to convert datetime to string and vice-versa. And, the last section will focus on handling timezone in Python.

  • Could you show us how does your and this.state.currentTime look like?
  • : 2019-02-16 , this.state.currentTime : 8:24 PM these are the output values.
  • Still gets the same out put. 'Invalid date'
  • Let me know if above mentioned solution is working or not?