Dear John & Five Doves,
Normally the format for dates is * not *  listed as
month/ year/ day, but using it
on this date December 2, 2018  ,  it looks like:  month 12/ year 18 / day  2

That resembles  Lisa Leenie's  11192  with
Month 12 ( 1 1+1 ) 111
Year 18 (1+8 )   9
Day  2

Blessings,Lynnette