Skip to content

Adding Lunar Date adjustment #4

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
ahmed-sherien wants to merge 2 commits into
base: master
Choose a base branch
from
Open

Adding Lunar Date adjustment #4

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
febc9f4
adding adjustment ... supports only negative values
Aug 1, 2013
3b2342f
adding adjustment to daysInMonth
ahmed-sherien Aug 4, 2013
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 4 additions & 3 deletions jquery.calendars.ummalqura.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@ $.extend(UmmAlQuraCalendar.prototype, {
minMonth: 1, // The minimum month number
firstMonth: 1, // The first month in the year
minDay: 1, // The minimum day number
adjustment: 0, // Islamic date adjustment for changing after lunar sighting

regional: { // Localisations
'': {
Expand Down Expand Up @@ -86,7 +87,7 @@ $.extend(UmmAlQuraCalendar.prototype, {
@throws error if an invalid month/year or a different calendar used */
daysInMonth: function (year, month) {
var date = this._validate(year, month, this.minDay, $.calendars.local.invalidMonth);
var mcjdn = date.toJD() - 2400000 + 0.5; // Modified Chronological Julian Day Number (MCJDN)
var mcjdn = date.toJD() - 2400000 + 0.5 + this.adjustment; // Modified Chronological Julian Day Number (MCJDN)
// the MCJDN's of the start of the lunations in the Umm al-Qura calendar are stored in the 'ummalqura_dat' array
var index = 0;
for (var i = 0; i < ummalqura_dat.length; i++) {
Expand Down Expand Up @@ -121,14 +122,14 @@ $.extend(UmmAlQuraCalendar.prototype, {
var date = this._validate(year, month, day, $.calendars.local.invalidDate);
var index = (12 * (date.year() - 1)) + date.month() - 16260;
var mcjdn = date.day() + ummalqura_dat[index - 1] - 1;
return mcjdn + 2400000 - 0.5; // Modified Chronological Julian Day Number (MCJDN)
return mcjdn + 2400000 - 0.5 - this.adjustment; // Modified Chronological Julian Day Number (MCJDN)
},

/* Create a new date from a Julian date.
@param jd (number) the Julian date to convert
@return (CDate) the equivalent date */
fromJD: function (jd) {
var mcjdn = jd - 2400000 + 0.5; // Modified Chronological Julian Day Number (MCJDN)
var mcjdn = jd - 2400000 + 0.5 + this.adjustment; // Modified Chronological Julian Day Number (MCJDN)
// the MCJDN's of the start of the lunations in the Umm al-Qura calendar
// are stored in the 'ummalqura_dat' array
var index = 0;
Expand Down