USD: ACT/360 (money market) / 30/360 (corporate bond) / ACT/ACT (UST)
| source | ISDA + market convention |
| derivation | published_source |
| quality | published |
| set | 2026-05-25 |
| last reviewed | 2026-05-25 |
| next review due | 2026-12-31 |
Per-instrument day-count; affects accrued interest + DV01.