Day Count Convention Lookup

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Author: ISDA

Source: 2006 ISDA Definitions

Day Count Conventions:

30/360: 30/360, 360/360, Bond Basis
30E/360: 30E/360, Eurobond Basis
30E/360 ISDA: 30E/360 ISDA
Act/365: Actual/365 Fixed, Act/365 Fixed, A/365 Fixed, A/365F
Act/Act Bond: Act/Act ICMA, Actual/Actual ICMA

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2026-02-14, ∼3280🔥, 0💬

"30/360 US" - Test Cases
What test cases can be used to verify the 30/360 US Day Count Convention? To verify the 30/360 US Day Count Convention, we should consider the following test cases: Is Accrual Period EOM: No Maturity Date: 2066-02-15 EOM Adj # T1 T2 D1 D2 D1 D2 DiR n1 2026-01-15 2026-02-15 15 15 15 15 30 n2 2026-01-... 2026-02-14, ∼540🔥, 0💬

"30/360 US" - Variations of EOM Rules
What are the variations of the EOM rule in the 30/360 US Day Count Convention? An important feature of the 30/360 US Day Count Convention is the EOM rule as highlighted below: Day_Count_Factor(Y1,M1,D1,Y2,M 2,D2)= DiR(Y1,M1,D1,Y2,M2,D2) / DiY(Y1,M1,D1,Y2,M2,D2) DiR(Y1,M1,D1,Y2,M2,D2) = 360×(Y2-Y1) +... 2026-03-22, ∼538🔥, 0💬

CUSIP: 912797MH7 - US Treasury Bill, 0%, 2025-09-04
Where to find more information on CUSIP: 912797MH7 - US Treasury Bill, 0%, 2025-09-04 and its interest payments? Detailed information on CUSIP: 912797MH7 - US Treasury Bill, 0%, 2025-09-04 (52-Week ) and its interest payments are presented below. 2026-02-14, ∼369🔥, 0💬

References
Where to find references on Day Count Conventions? Here is a list of references on Day Count Conventions: 30/360 Bond Basis, 30E/360 Eurobond Basis, 30E/360 ISDA , isda.org - It offers a large number of day count examples on 30/360, 30E/360 and 30E/360 Day Count Conventions in an Excel file. EMU and... 2026-07-13, ∼366🔥, 0💬

CUSIP: 91282CJB8 - US Treasury Note, 5%, 2025-09-30
Where to find more information on CUSIP: 91282CJB8 - US Treasury Note, 5%, 2025-09-30 and its interest payments? Detailed information on CUSIP: 91282CJB8 - US Treasury Note, 5%, 2025-09-30 (2-Year ) and its interest payments are presented below. 2026-03-22, ∼352🔥, 0💬

CUSIP: 912797NT0 - US Treasury Bill, 0%, 2025-04-01
Where to find more information on CUSIP: 912797NT0 - US Treasury Bill, 0%, 2025-04-01 and its interest payments? Detailed information on CUSIP: 912797NT0 - US Treasury Bill, 0%, 2025-04-01 (17-Week ) and its interest payments are presented below. 2026-03-22, ∼350🔥, 0💬

CUSIP: 91282CDY4 - US Treasury Note, 1.875%, 2032-02-15
Where to find more information on CUSIP: 91282CDY4 - US Treasury Note, 1.875%, 2032-02-15 and its interest payments? Detailed information on CUSIP: 91282CDY4 - US Treasury Note, 1.875%, 2032-02-15 (10-Year ) and its interest payments are presented below. 2026-04-13, ∼303🔥, 0💬

CUSIP: 912797TN7 - US Treasury Bill, 0%, 2026-07-16
Where to find more information on CUSIP: 912797TN7 - US Treasury Bill, 0%, 2026-07-16 and its interest payments? Detailed information on CUSIP: 912797TN7 - US Treasury Bill, 0%, 2026-07-16 (26-Week ) and its interest payments are presented below. 2026-07-13, ∼194🔥, 0💬

CUSIP: 91282CPZ8 - US Treasury Note, 4.125%, 2036-02-15
Where to find more information on CUSIP: 91282CPZ8 - US Treasury Note, 4.125%, 2036-02-15 and its interest payments? Detailed information on CUSIP: 91282CPZ8 - US Treasury Note, 4.125%, 2036-02-15 (10-Year ) and its interest payments are presented below. 2026-07-13, ∼193🔥, 0💬

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