1980 ~ 1984
1980:
January / February / March / April / May / June / July / August /
September / October / November / December
1981:
January / February / March / April / May / June / July /
August /
September / October / November / December
1982:
January / February / March / April / May / June / July / August /
September / October / November / December
1983:
January / February / March / April / May / June / July / August /
September / October / November / December
1984:
January / February / March / April /
May / June / July /
August /
September / October / November / December
on to 1985-1989