The following sources were consulted in the preparation of the article “Why Greenwich Is the Official Starting Point for Time.”
- International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day. October, 1884
- IERS Technical Note No. 36 — IERS Conventions
- Why the Greenwich meridian moved
- BIPM documentation on Coordinated Universal Time and leap seconds
- Loi du 9 mars 1911 modification de l’heure legale Francaise pour la mettre en concordance avec le Systeme universel des fuseaux horaires
- Royal Greenwich Observatory Archives