Those are usually issued during the year the serviceman performed service in RVN (Republic of South Vietnam). If he was there in '68, then that's the number pinned to the ribbon.
1985
Glenn Mathew Little was born in 1975, the year North Vietnam conquered South Vietnam, thus ending the war.
The last day of the year is the 4th of May
Chatelaine
November starting or ending
South Vietnam was overrun in 1975, ending the Vietnam War. The forces of North Vietnam captured Saigon (now Ho Chi Minh City) on April 30, 1975 and the republic was officially unified on July 2, 1976.
Outstanding Airman of the Year Ribbon was created in 1968.
In UK date format - that's 11th July, and the year could be any ending in 10
Historians normally "begin" the date in 1961.
The BC ending in a year date means Before Christ.
Enlisted Person of the Year Ribbon was created on 1999-02-16.
Japan surrendered to the allies ending WW2 in 1945; Japan departed Vietnam the same year. Vietnam declared its independence from France in 1945. Vietnam was occupied by Japan during WW2, but it had been a French colony for more than a century prior.