Hijri calendar is 1 day too early.

4
votes

how do I fix the Hijri calendar being 1 day too early?

Today, my-time = 23 July, 2013 Tuesday
And the Islamic calendar time = 14 Ramadan, 1434 (according to this

My calendar is showing 15 Ramadan instead of 14. However I'm not sure whether it is my fault or the site's fault. Anyone can confirm today's Ramadan date?

lblgreg.Text = DateTime.Today.ToString("dd/MM/yyyy");

Today's date:

DateTime today = DateTime.Today;

Conversion of Gregorian calendar to Hibri:

CultureInfo Hijri = CultureInfo.CreateSpecificCulture("ar-SA");

        string datetoday_day = today.ToString("dd", Hijri);
        string datetoday_month = today.ToString("MM", Hijri);
        string datetoday_year = today.ToString("yyyy", Hijri);

        int month_check = int.Parse(datetoday_month);

Switch statement for value of months to be switch to text-month:

switch (month_check) {
            case 01:
                {
                    lbldate.Text  = datetoday_day + " Muharram " + datetoday_year;
                    break;
                }
            case 02:
                {
                    lbldate.Text = datetoday_day + " Safar " + datetoday_year;
                    break;
                }
            case 03:
                {
                    lbldate.Text = datetoday_day + " Rabi Al-Awwal " + datetoday_year;
                    break;
                }
            case 04:
                {
                    lbldate.Text = datetoday_day + " Rabi Al-Akhar " + datetoday_year;
                    break;
                }
            case 05:
                {
                    lbldate.Text = datetoday_day + " Jumada Al-Awwal " + datetoday_year;
                    break;
                }
            case 06:
                {
                    lbldate.Text = datetoday_day + " Jumada Al-Akhirah " + datetoday_year;
                    break;
                }
            case 07:
                {
                    lbldate.Text = datetoday_day + " Rajab " + datetoday_year;
                    break;
                }
            case 08:
                {
                    lbldate.Text = datetoday_day + " Shaban " + datetoday_year;
                    break;
                }
            case 09:
                {
                    lbldate.Text = datetoday_day + " Ramadan " + datetoday_year;
                    break;
                }
            case 10:
                {
                    lbldate.Text = datetoday_day + " Shawwal " + datetoday_year;
                    break;
                }
            case 11:
                {
                    lbldate.Text = datetoday_day + " Dhul-Qadah " + datetoday_year;
                    break;
                }
            case 12:
                {
                    lbldate.Text = datetoday_day + " Dhul-Hijjah " + datetoday_year;
                    break;
                }
        }
3
c#.netcalendarhijri
Offtopic - but you should consider setting a local month variable that will change in your switch statement, and then set the lbl text after the switch Edit I also found this class which may help you even more with all the conversion – Sayse

3 Answers

6
votes

Use UmAlQuraCalendar instead.

var UmAlQuraCalendar = new UmAlQuraCalendar();
CultureInfo Hijri = new CultureInfo("ar-SA")  
{ 
    DateTimeFormat = { Calendar = UmAlQuraCalendar } 
};
2
votes

use HijriAdjustment and set it between -2 to 2 like this 

System.Globalization.HijriCalendar hej = new System.Globalization.HijriCalendar();
    hej.HijriAdjustment =-2;
0
votes

Check code below

using System.Globalization;
//.......
var arDateTimeFormat= new CultureInfo("ar").DateTimeFormat;
arDateTimeFormat.Calendar = new HijriCalendar { HijriAdjustment = -1}; //set HijriAdjustment between -2 to 2
arDateTimeFormat.AbbreviatedMonthNames = new []{"Muharram", "Safar", "Rabi Al-Awwal", "Rabi Al-Akhar", "Jumada Al-Awwal", "Jumada Al-Akhirah", "Rajab", "Shaban", "Ramadan", "Shawwal", "Dhul-Qadah", "Dhul-Hijjah", string.Empty};
lbldate.Text = DateTime.Now.ToString("dd MMM, yyyy", arDateTimeFormat);