id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
243	Dates with 2-digit year values after 2129 are assumed to be in the 20th century (e.g, 1930).	Gary Dixon	Eric Swenson	"The Y2K change for interpreting 2-digit year numbers will have problems for years later than 2129.  A date like 30-12-18 would be interpreted as 1930-12-18 according to algorithm used in the current convert_date_to_binary_ code.  It may be appropriate to interpret years before 1960 (the year of early Multics design papers) as being in the 21 century, rather than in the 20th century.

The current code treats all 2-digit years < 30 as being in 21st century (e.g., 2125), and years in range 30 to 99 as being in the 20th century (e.g., 1950).

The following example shows where the breakpoint lies in the current code:


{{{
clock ^yc-^my-^dm 30-10-12
30-10-12
r 11:55 0.059 0 level 2

clock iso_date [clock ^yc-^my-^dm 30-10-12]
1930-10-12
r 11:55 0.377 0 level 2

clock ^yc-^my-^dm 29-10-15
29-09-15
r 11:56 0.054 0 level 2

clock iso_date [clock ^yc-^my-^dm]
2029-09-15
r 11:56 0.345 0 level 2
}}}
 "	enhancement	new	major		General	MR12.7