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DayCount__Name

Name refers to Name associated with a predefined convention for calculating the time interval in annual units between any two dates.
Available Name types:
30/360
US (NASD) convention
Also known as "30/360", "360/360", or "Bond Basis".
Calculation rule: Divide N by 360, where N is the number of days within the referenced period counted using the following rule:
If the ending date is the 31st of a month and the starting date is earlier than the 30th of a month, the ending date becomes equal to the 1st of the next month, otherwise the ending date becomes equal to the 30th of the same month.
30E/360
European convention
Also known as "30E/360", or "Eurobond Basis".
Calculation rule: Divide N by 360, where N is the number of days within the referenced period counted using the following rule:
Starting dates or ending dates that occur on the 31st of a month become equal to the 30th of the same month.
30IT/360
Italian convention.
Calculation rule: Divide N by 360, where N is the number of days within the referenced period counted using the following rule:
Starting dates or ending dates that occur on February and are greater than 27 become equal to 30 for computational shake.
ACT/360
Actual/360 convention, also known as "Act/360", or "A/360".
Calculation rule: Divide N by 360, where N is the actual number of days within the referenced period.
ACT/365F
Actual/365 convention, also known as "Act/365 (Fixed)", "A/365 (Fixed)", or "A/365F".
Calculation rule: Divide N by 365, where N is the actual number of days within the referenced period.
warning According to ISDA, "Actual/365" (without "Fixed") is an alias for "Actual/Actual (ISDA)" (see ActualActual.)
If Actual/365 is not explicitly specified as fixed in an instrument specification, you might want to double-check its meaning.
ACT/ACT
The ISDA convention, also known as "Actual/Actual (Historical)", "Actual/Actual", "Actual/Actual ISDA", and according to ISDA also "Actual/365", "Act/365", and "A/365".
Calculation rule: Compute the sum N1/366 + N2/365, where
N1 = actual number of days within the accrual period that fall in a leap year
N2 = actual number of days within the accrual period that fall in a normal year
ACT/ACT(AFB)
The AFB convention, also known as "Actual/Actual Euro".
Calculation rule:
here
ACT/ACT(ICMA)
The ISMA and US Treasury convention, also known as "Actual/Actual Bond" and "Actual/Actual ISMA".
Calculation rule:
here