Owner's Manual

92 APPENDIX - Reference Information
30/360 day-count method
1
Note: The method assumes 30 days per month and 360 days per year.
where:
M1 = month of first date
DT 1 = day of first date
Y 1 = year of first date
M 2 = month of second date
DT 2 = day of second date
Y 2 = year of second date
Note: If DT1 is 31, change DT1 to 30. If DT2 is 31 and DT1 is 30 or 31, change
DT2 to 30; otherwise, leave it at 31.
Note:
1
Source for 30/360 day-count method formula Lynch, John J., Jr., and Jan H.
Mayle.
Standard Securities Calculation Methods . New York: Securities Industry
Association, 1986