Astronomical and editorial sources
These references define the phase terminology, event times and civil-date conventions used throughout the calendar.
Astronomical references
- U.S. Naval Observatory: Dates of Primary Phases of the Moon — published tables of new, quarter and full Moon events.
- U.S. Naval Observatory: phases and illuminated fraction — terminology and phase definitions.
- IANA Time Zone Database — civil time-zone identifiers and the transition rules used to show local dates and times.
Eclipse references
- NASA lunar eclipse overview — eclipse geometry and the red colour seen during totality.
- NASA/GSFC eclipse catalogues — long-range solar and lunar eclipse reference tables.
- NASA eclipse viewing safety — safe solar viewers, projection methods and the ISO 12312-2 standard.
Names and UK seasonal guidance
- Royal Museums Greenwich: full Moon names — a modern English-language list and explanations of commonly used names.
- Royal Museums Greenwich: 2026 full Moon calendar — an independent UK-facing date and naming reference.
- Royal Horticultural Society: grow your own — UK seasonal crop and garden-task guidance.
- Met Office: late-spring frost — why local frost can remain a constraint after calendar spring begins.
Full Moon names are presented as popular almanac labels with competing traditions, not as one universal historic or Indigenous naming system. Gardening pages use lunar timing as a traditional planning layer and UK seasonal references for the practical tasks.