Year (leap) Septennial

Year (leap) → Second y → s Second → Year (leap) s → y Year (leap) → Minute y → min Minute → Year (leap) min → y Year (leap) → Hour y → h Hour → Year (leap) h → y Year (leap) → Day y → d Day → Year (leap) d → y Year (leap) → Year y → yr Year → Year (leap) yr → y Year (leap) → Millisecond y → ms Millisecond → Year (leap) ms → y Year (leap) → Microsecond y → µs Microsecond → Year (leap) µs → y Year (leap) → Nanosecond y → ns Nanosecond → Year (leap) ns → y Year (leap) → Week y → wk Week → Year (leap) wk → y Year (leap) → Month y → mo Month → Year (leap) mo → y Year (leap) → Decade y → dec Decade → Year (leap) dec → y Year (leap) → Century y → cent Century → Year (leap) cent → y Year (leap) → Millennium y → mil Millennium → Year (leap) mil → y Year (leap) → Picosecond y → ps Picosecond → Year (leap) ps → y Year (leap) → Femtosecond y → fs Femtosecond → Year (leap) fs → y Year (leap) → Attosecond y → as Attosecond → Year (leap) as → y Year (leap) → Shake y → shake Shake → Year (leap) shake → y Year (leap) → Month (synodic) y → month Month (synodic) → Year (leap) month → y Year (leap) → Year (Julian) y → y Year (Julian) → Year (leap) y → y Year (leap) → Year (tropical) y → y Year (tropical) → Year (leap) y → y Year (leap) → Year (sidereal) y → y Year (sidereal) → Year (leap) y → y Year (leap) → Day (sidereal) y → d Day (sidereal) → Year (leap) d → y Year (leap) → Hour (sidereal) y → h Hour (sidereal) → Year (leap) h → y Year (leap) → Minute (sidereal) y → min Minute (sidereal) → Year (leap) min → y Year (leap) → Second (sidereal) y → s Second (sidereal) → Year (leap) s → y Year (leap) → Fortnight y → fortnight Fortnight → Year (leap) fortnight → y Year (leap) → Septennial y → septennial Septennial → Year (leap) septennial → y Year (leap) → Octennial y → octennial Octennial → Year (leap) octennial → y Year (leap) → Novennial y → novennial Novennial → Year (leap) novennial → y Year (leap) → Quindecennial y → quindecennial Quindecennial → Year (leap) quindecennial → y Year (leap) → Quinquennial y → quinquennial Quinquennial → Year (leap) quinquennial → y Year (leap) → Planck time y → tP Planck time → Year (leap) tP → y