Days between dates – Texas Instruments TI-84 User Manual
Page 643
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Appendix B: Reference Information
640
Days between Dates
Days between Dates
Days between Dates
Days between Dates
With the
dbd(
function, you can enter or compute a date within the range Jan. 1, 1950,
through Dec. 31, 2049.
Actual/actual day-count method (assumes actual number of days per month and
actual number of days per year):
dbd
( (days between dates) = Number of Days II
- Number of Days I
4
Nom
=
where:
x
= .01
×
Eff
Eff
=
effective rate
CP
=
compounding periods
Nom
=
nominal rate
Number of Days I
= (
Y1
-
YB
)
× 365
+ (number of days
MB
to
M
1)
+
DT1
+
Number of Days II
= (
Y
2
-
YB
)
× 365
100
CP
[
Ч
Ч
e
1
CP
÷
x
1
+
(
)
ln
×
1
]
–
Y1
YB
–
(
)
4
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