Dear Mr Egli, online I found your Python code for Islamic & Gregorian Dates (https://mail.python.org/pipermail/db-sig/1997-December/000361.html) and wondered whether you might help me:
I have python script (see below) that to translate Hijri Dates to Gregorian Date and vice versa. But the days might be off for about 1 day. eg gregorian date: 31/01/2013 is translated into Hirji date: 19-03-1434 instead of the correct 20-03-2013. My guess: there is a problem with leap years and last days of month and/or leap years. Python knowledge is not good enough to correct the code implement your suggestions. Would you kindly help me? Any tiny advice will be helpful! What do I have to change (add) to get the correct result? Thanks for any effort! All the best, Lucie Krennwallner Python Script modified from http://gersham-xbmc-repo.googlecode.com/svn/trunk/addons/script.islamic.prayer.times/resources/lib/Hijri.py 1) GREGORIAN DATE CONVERTED TO HIJRI DATES import math def intPart(floatNum): if floatNum < -0.0000001: return math.ceil(floatNum - 0.0000001) return math.floor(floatNum + 0.0000001) def Gregorian2Hijri(yr, mth, day): jd1 = intPart((1461 * (yr + 4800 + intPart((mth - 14) / 12.0))) / 4) jd2 = intPart((367 * (mth - 2 - 12 * (intPart((mth - 14) / 12.0)))) / 12) jd3 = intPart((3 * (intPart((yr + 4900 + intPart((mth - 14) / 12.0)) / 100))) / 4) jd = jd1 + jd2 - jd3 + day - 32075 l = jd - 1948440 + 10632 n = intPart((l - 1) /10631.0) l = l - 10631 * n + 354 j1 = (intPart((10985 - l) / 5316.0)) * (intPart((50 * l) / 17719.0)) j2 = (intPart(l / 5670.0)) * (intPart((43 * l) / 15238.0)) j = j1 + j2 l1 = (intPart((30 - j) / 15.0)) * (intPart((17719 * j) / 50.0)) l2 = (intPart(j / 16.0)) * (intPart((15238 * j) / 43.0)) l = l - l1 - l2 + 29 m = intPart((24 * l) / 709.0) y = 30 * n + j - 30 d = l - intPart((709 * m) / 24.0) yr = int(raw_input("Gegorian year: ")) mth= int(raw_input("Gegorian month: ")) day = int(raw_input("Gegorian day: ")) hi = Gregorian2Hijri(yr, mth, day) print hi 2) HIJRI DATE CONVERTED TO GREGORIAN DATES import math def intPart(floatNum): if floatNum < -0.0000001: return math.ceil(floatNum - 0.0000001) return math.floor(floatNum + 0.0000001) def Hijri2Gregorian(yr, mth, day): jd1 = intPart((11 * yr + 3) / 30.0) jd2 = intPart((mth - 1) / 2.0) jd = jd1 + 354 * yr + 30 * mth - jd2 + day + 1948440 - 385 l = jd + 68569 n = intPart((4 * l) / 146097.0) l = l - intPart((146097 * n + 3) / 4.0) i = intPart((4000 * (l + 1)) / 1461001.0) l = l - intPart((1461 * i) / 4.0) + 31 j = intPart((80 * l) / 2447.0) d = l - intPart((2447 * j) / 80.0) l = intPart(j / 11.0) m = j + 2 - 12 * l y = 100 * (n - 49) + i + l return y, m, d yr = int(raw_input("Provide year, like 1395: ")) mth = int(raw_input("Provide year, like 07: ")) day = int(raw_input("Provide year, like 12: ")) inp =Hijri2Gregorian(yr, mth, day) print inp Lucie Krennwallner | BI Consultant t: +44 (0)1202 373333 | m: +49 (0)176 328 324 62 We're Hiring! <http://interworks.co.uk/careers/> | Support <http://support.interworks.co.uk/> | Blog <http://interworks.co.uk/blog/> | LinkedIn <http://www.linkedin.com/company/interworks-uk> | Facebook <https://www.facebook.com/interworks>[image: InterWorks Europe] <http://interworks.co.uk/>Unit 1, Christchurch Business Park, Dorset, BH23 4FLCo Reg No 08368863 | VAT 154881290
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