Various users on social media are pointing out different dates for Jamal Khashoggi's date of birth and birthdate. His passport lists 22 Jan 1958, but a a twee from his fiancée, Haticr Cengiz, says she was planning a birthday party for him on Oct 13.
The reason for some confusion here seems to be the use of the Islam Hijrah calendar, which is a lunar calendar, and drifts ten days from the regular 365 day calendar.
Kashogi's birthdate is 1-7-1377 in the Hijrha, as seen in his passport (assuming it's real)
You can convert this with any number of online calculators:
The current Hijri year is 1440, and the 13-oct-2018 is 2-2 (Safar) -1440
So 1-7-1440 (his hypothetical "Hijri birthday") is September 18, 2018, nearly a month before the planned Oct 13 party.
Update - I'm told that prior to 1975 in Saudi Arabia birth records were not kept, and all Saudi's born before then have their birth date listed as 1/7/13**AH. So 1/7 (22 Jan) is NOT his actual birthday.
And:hi there; i noticed that you are interested in Jamal's birthday. let me say something about birthdays in my country! all saudi born before 1975 the Saudi government registered their DOB in hijri as 1/7/13**AH ... because at that time the government does not have records! so do not be confused
and as you mention in your blog; Saudies celebrates their BD any time and sometimes twice and most of the time they don't celebrates! it's not common to do so
Hence it seems likely that Oct 13 was his actual birthday.