Era starts are in Julian rather than proleptic Gregorian
General
Trac Info
General
Trac Info
Description
shows start for the islamic variants as either 622-7-15 or 622-7-16. These are Julian dates, but [LDML says]( ) “Era start or end dates are specified in terms of the equivalent proleptic Gregorian date (in "y-M-d" format).“
The corresponding proleptic Gregorian dates are 622-07-18 and 622-07-19.
Update 2025-05: Title modified as this problem was not unique to Islamic eras ( )
major
shows
startfor theislamicvariants as either 622-7-15 or 622-7-16. These are Julian dates, but [LDML says]( ) “Era start or end dates are specified in terms of the equivalent proleptic Gregorian date (in "y-M-d" format).“The corresponding proleptic Gregorian dates are 622-07-18 and 622-07-19.
Update 2025-05: Title modified as this problem was not unique to Islamic eras ( )