How to Get All Days in Current Month

How to get all days in current month?

Here's a solution with datetime and calendar:

>>> import datetime, calendar
>>> year = 2014
>>> month = 1
>>> num_days = calendar.monthrange(year, month)[1]
>>> days = [datetime.date(year, month, day) for day in range(1, num_days+1)]
>>> days
[datetime.date(2014, 1, 1), datetime.date(2014, 1, 2), datetime.date(2014, 1, 3), datetime.date(2014, 1, 4), datetime.date(2014, 1, 5), datetime.date(2014, 1, 6), datetime.date(2014, 1, 7), datetime.date(2014, 1, 8), datetime.date(2014, 1, 9), datetime.date(2014, 1, 10), datetime.date(2014, 1, 11), datetime.date(2014, 1, 12), datetime.date(2014, 1, 13), datetime.date(2014, 1, 14), datetime.date(2014, 1, 15), datetime.date(2014, 1, 16), datetime.date(2014, 1, 17), datetime.date(2014, 1, 18), datetime.date(2014, 1, 19), datetime.date(2014, 1, 20), datetime.date(2014, 1, 21), datetime.date(2014, 1, 22), datetime.date(2014, 1, 23), datetime.date(2014, 1, 24), datetime.date(2014, 1, 25), datetime.date(2014, 1, 26), datetime.date(2014, 1, 27), datetime.date(2014, 1, 28), datetime.date(2014, 1, 29), datetime.date(2014, 1, 30), datetime.date(2014, 1, 31)]

Get all dates of current month using Python

You can use datetime:

from datetime import date, timedelta

d1 = date(2019, 6, 1)
d2 = date(2019, 6, 30)
delta = d2 - d1

for i in range(delta.days + 1):
    print(d1 + timedelta(days=i))

Refining the code and making it independent of user specification:

from datetime import date, timedelta, datetime
import calendar

def all_dates_current_month():
    month = datetime.now().month
    year = datetime.now().year
    number_of_days = calendar.monthrange(year, month)[1]
    first_date = date(year, month, 1)
    last_date = date(year, month, number_of_days)
    delta = last_date - first_date

    return [(first_date + timedelta(days=i)).strftime('%Y-%m-%d') for i in range(delta.days + 1)]

all_dates_current_month()

and you get:

['2019-06-01',
 '2019-06-02',
 '2019-06-03',
 '2019-06-04',
 '2019-06-05',
 '2019-06-06',
 '2019-06-07',
 '2019-06-08',
 '2019-06-09',
 '2019-06-10',
 '2019-06-11',
 '2019-06-12',
 '2019-06-13',
 '2019-06-14',
 '2019-06-15',
 '2019-06-16',
 '2019-06-17',
 '2019-06-18',
 '2019-06-19',
 '2019-06-20',
 '2019-06-21',
 '2019-06-22',
 '2019-06-23',
 '2019-06-24',
 '2019-06-25',
 '2019-06-26',
 '2019-06-27',
 '2019-06-28',
 '2019-06-29',
 '2019-06-30']

get number of days in the CURRENT month using javascript

Does this do what you want?

function daysInThisMonth() {
  var now = new Date();
  return new Date(now.getFullYear(), now.getMonth()+1, 0).getDate();
}

Get all days and date for a given month

try this

$list=array();
$month = 12;
$year = 2014;

for($d=1; $d<=31; $d++)
{
    $time=mktime(12, 0, 0, $month, $d, $year);          
    if (date('m', $time)==$month)       
        $list[]=date('Y-m-d-D', $time);
}
echo "<pre>";
print_r($list);
echo "</pre>";

How to get all dates and weekdays in current month in flutter

The lastDayOfMonth is a single date, therefore using lastDayOfMonth.weekDay gives a single day based on lastDayOfMonth. We can add duration on lastDayOfMonth and find day name.

 final currentDate =
           lastDayOfMonth.add(Duration(days: index + 1));

This will provide update date based on index. I am using intl package or create a map to get the day name.

A useful answer about date format.

 Row(
  children: List.generate(
    lastDayOfMonth.day,
    (index) => Padding(
      padding: const EdgeInsets.only(right: 24.0),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Text(
            "${index + 1}",
          ),
          () {
            final currentDate =
                lastDayOfMonth.add(Duration(days: index + 1));

            final dateName =
                DateFormat('E').format(currentDate);
            return Text(dateName);
          }()
        ],
      ),
    ),
  ),
),

Find all the days in a month with Date object?

To get a list of all days in a month, you can start with a Date on the first day of a month, increase the day until the month changes.

/**
 * @param {int} The month number, 0 based
 * @param {int} The year, not zero based, required to account for leap years
 * @return {Date[]} List with date objects for each day of the month
 */
function getDaysInMonth(month, year) {
  var date = new Date(year, month, 1);
  var days = [];
  while (date.getMonth() === month) {
    days.push(new Date(date));
    date.setDate(date.getDate() + 1);
  }
  return days;
}

UTC Version

In response to some comments, I've created a version that uses UTC methods in case you want to call UTC methods instead of the standard methods that return the localized time zone.

I suspect this is the culprit of the comments saying this didn't work. You typically want to make sure you call getUTCMonth/Day/Hours methods if you instantiated it with Date.UTC, and vice-versa, unless you are trying to convert time zones and show differences.

function getDaysInMonthUTC(month, year) {
  var date = new Date(Date.UTC(year, month, 1));
  var days = [];
  while (date.getUTCMonth() === month) {
    days.push(new Date(date));
    date.setUTCDate(date.getUTCDate() + 1);
  }
  return days;
}

Editing This Answer

If you think there's a problem with this script, please feel free to:

• First see existing unit tests below
• Write a test case that proves it's broken.
• Fix the code, making sure existing tests pass.

Unit Tests

/**
 * @param {int} The month number, 0 based
 * @param {int} The year, not zero based, required to account for leap years
 * @return {Date[]} List with date objects for each day of the month
 */
function getDaysInMonthUTC(month, year) {
  var date = new Date(Date.UTC(year, month, 1));
  var days = [];
  while (date.getUTCMonth() === month) {
    days.push(new Date(date));
    date.setUTCDate(date.getUTCDate() + 1);
  }
  return days;
}

function getDaysInMonth(month, year) {
  var date = new Date(year, month, 1);
  var days = [];
  while (date.getMonth() === month) {
    days.push(new Date(date));
    date.setDate(date.getDate() + 1);
  }
  return days;
}

const days2020 = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
const days2021 = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

describe("getDaysInMonthUTC", function() {
  it("gets day counts for leap years", function() {
    const actual = days2020.map(
      (day, index) => getDaysInMonthUTC(index, 2020).length
    );
    expect(actual).toEqual(days2020);
  });

  it("gets day counts for non-leap years", function() {
    const actual = days2021.map(
      (day, index) => getDaysInMonthUTC(index, 2021).length
    );
    expect(actual).toEqual(days2021);
  });
});


describe("getDaysInMonth", function() {
  it("gets day counts for leap years", function() {
    const actual = days2020.map(
      (day, index) => getDaysInMonth(index, 2020).length
    );
    expect(actual).toEqual(days2020);
  });

  it("gets day counts for non-leap years", function() {
    const actual = days2021.map(
      (day, index) => getDaysInMonth(index, 2021).length
    );
    expect(actual).toEqual(days2021);
  });
});

// load jasmine htmlReporter
(function() {
  var env = jasmine.getEnv();
  env.addReporter(new jasmine.HtmlReporter());
  env.execute();
}());

<script src="https://cdn.jsdelivr.net/jasmine/1.3.1/jasmine.js"></script>
<script src="https://cdn.jsdelivr.net/jasmine/1.3.1/jasmine-html.js"></script>
<link href="https://cdn.jsdelivr.net/jasmine/1.3.1/jasmine.css" rel="stylesheet"/>

 public static void getWeeksOfMonth(int month, int year) {
        SimpleDateFormat sdf = new SimpleDateFormat("EEEE dd-MMM-yyyy");
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, year);
        cal.set(Calendar.MONTH, month);
        cal.set(DAY_OF_MONTH, 1);
        int ndays = cal.getActualMaximum(DAY_OF_MONTH);
        System.out.println(ndays + "<<<ff");
        while (cal.get(DAY_OF_WEEK) != FRIDAY) {
            cal.add(DAY_OF_MONTH, 1);
            ndays--;
        }
        int remainingDays = ndays%7;
        if(remainingDays==0)
            ndays += 7;
        else
            ndays = ndays + 7 - remainingDays;

        int inc = 1;
        for (int i = 1; i <= ndays; i++) {
            String day = sdf.format(cal.getTime());
            System.out.println(day + "<<<");
            inc++;
            if (i % 7 == 0) {
                Log.e("question", "=======week days===========");
                inc = 0;
            }
            if (inc >= 1 && i == ndays) {
                for (int ii = inc; ii <= 6; ii++) {
                    String dayi = sdf.format(cal.getTime());
                    System.out.println(dayi + "<<<");
                    Log.e("quest1", dayi + "<<<");
                    inc++;
                }
            }
            cal.add(Calendar.DATE, 1);
        }

    }

Friday 03-Feb-2017<<<
Saturday 04-Feb-2017<<<
Sunday 05-Feb-2017<<<
Monday 06-Feb-2017<<<
Tuesday 07-Feb-2017<<<
Wednesday 08-Feb-2017<<<
Thursday 09-Feb-2017<<<
=====week days===========
Friday 10-Feb-2017<<<
Saturday 11-Feb-2017<<<
Sunday 12-Feb-2017<<<
Monday 13-Feb-2017<<<
Tuesday 14-Feb-2017<<<
Wednesday 15-Feb-2017<<<
Thursday 16-Feb-2017<<<
=====week days===========
Friday 17-Feb-2017<<<
Saturday 18-Feb-2017<<<
Sunday 19-Feb-2017<<<
Monday 20-Feb-2017<<<
Tuesday 21-Feb-2017<<<
Wednesday 22-Feb-2017<<<
Thursday 23-Feb-2017<<<
=====week days===========
Friday 24-Feb-2017<<<
Saturday 25-Feb-2017<<<
Sunday 26-Feb-2017<<<
Monday 27-Feb-2017<<<
Tuesday 28-Feb-2017<<<
Wednesday 01-Mar-2017<<<
Thursday 02-Mar-2017<<<
=====week days===========

var currentDate = new Date();
var currentYear = currentDate.getFullYear();
var currentMonth = currentDate.getMonth();

var currentMonthLastDate = (new Date(currentYear, currentMonth, 0)).getDate();

var daysLeftInMonth = currentMonthLastDate - currentDate.getDate();

console.log(daysLeftInMonth);

var date = new Date();
var month = date.getMonth();
date.setDate(1);
var all_days = [];
while (date.getMonth() == month) {
    var d = date.getFullYear() + '-' + date.getMonth().toString().padStart(2, '0') + '-' + date.getDate().toString().padStart(2, '0');
    all_days.push(d);
    date.setDate(date.getDate() + 1);
}
console.log(all_days);