Skip to content
OpenCDD
ppq/yv1rev 12026-03-17

part per quadrillion per year

0112/2///62720#UAE148

unit of proportion equal to 10⁻¹⁶ divided by the 31 557 600-fold of the SI base unit second (according to one year with 365,25 days as physical quantity in the metrology)

unit

Version history1#

  1. Current rev 01
    17 Mar 2026 · 11:18 UTC by BATCH 00000924
    View on cdd.iec.ch ↗

IEC CDD records every published revision of each entity — version number, status, timestamp, and the change request that introduced it. OpenCDD captures the full chain of custody from cdd.iec.ch; the entry marked Current is the one rendered on this page.

Metadata#

Synonyms
  • parts per quadrillion per year
Version
1
Revision
1
Status
Standard
Publisher
IEC
Published in
IEC 62720
Responsible committee
IEC/SC 3D
Change request
C00192
Dates
  • Original: 2026-03-17
  • Current version: 2026-03-17
  • Current revision: 2026-03-17