Celestial Almanac
Date+ MoonPhase()+ illumination= daily disc
KnownMonth + yearFindDaily phaseSampleLocal noonSourceAstronomy EngineOutputMoon gridProofElongation
CalculationTime
Celestial Almanac
A printable field almanac for moon phase, solar noon, daylight context, sky themes, prep dates and source-visible astronomy limits beside the CalculationTime clockface.
Inputs, result, proof and time.
Use the instrument above, then check the calculation record, assumptions and related tools below.
Printable celestial almanac
Field celestial almanac
Sydney observing desk - July 2027 - Southern hemisphere- Sky theme
- Scorpius core
- New moon
- 04 July
- Full moon
- 18 July
- Solar noon
- 11:59-12:02
MonTueWedThuFriSatSun
Fri, 02 July 2027
waning crescent - Scorpius core
winter recovery; engine solar noon at 11:59.Prep date25 June7 day lead
Phase age27.2 dayswaning crescent; engine elongation
Sun marker11:59Astronomy Engine meridian crossing
Field score4/4Moon darkness plus Friday/Saturday convenience
Sat, 03 July 2027
waning crescent - Scorpius core
winter recovery; engine solar noon at 11:59.Prep date26 June7 day lead
Phase age28.3 dayswaning crescent; engine elongation
Sun marker11:59Astronomy Engine meridian crossing
Field score4/4Moon darkness plus Friday/Saturday convenience
Fri, 30 July 2027
waning crescent - Scorpius core
winter recovery; engine solar noon at 12:02.Prep date23 July7 day lead
Phase age25.7 dayswaning crescent; engine elongation
Sun marker12:02Astronomy Engine meridian crossing
Field score4/4Moon darkness plus Friday/Saturday convenience
Sat, 31 July 2027
waning crescent - Scorpius core
winter recovery; engine solar noon at 12:02.Prep date24 July7 day lead
Phase age26.8 dayswaning crescent; engine elongation
Sun marker12:02Astronomy Engine meridian crossing
Field score4/4Moon darkness plus Friday/Saturday convenience
Thu, 01 July 2027
waning crescent - Scorpius core
winter recovery; engine solar noon at 11:59.Prep date24 June7 day lead
Phase age26.1 dayswaning crescent; engine elongation
Sun marker11:59Astronomy Engine meridian crossing
Field score3/4Moon darkness plus Friday/Saturday convenience
Sun, 04 July 2027
new moon - Scorpius core
winter recovery; engine solar noon at 12:00.Prep date27 June7 day lead
Phase age29.5 daysnew moon; engine elongation
Sun marker12:00Astronomy Engine meridian crossing
Field score3/4Moon darkness plus Friday/Saturday convenience
Method
Moon phase uses Astronomy Engine lunar elongation at local noon. Solar noon uses Astronomy Engine SearchHourAngle(Sun, 0) for the selected coordinates.
Assumptions
The month uses civil UTC date arithmetic, a fixed time-zone offset and broad hemisphere sky themes. It does not model live ephemerides or local horizon altitude.
Notes
Verify current ephemeris, moonrise, weather, twilight and site access before treating any row as an observing commitment.
Method
The sheet combines civil dates, lunar phase and apparent solar noon into one planning almanac
The almanac uses browser civil-date arithmetic, Astronomy Engine lunar elongation, a fixed UTC offset and Astronomy Engine SearchHourAngle(Sun, 0) for solar noon. It is built for printable planning, source checking and field preparation, not for official ephemeris publication.
Almanac basis
Moon labels are phase bands from Astronomy Engine at local noon. Solar noon is the engine-computed Sun meridian crossing for the entered coordinates and fixed time-zone offset. Sky themes are broad seasonal prompts by hemisphere.
Print path
The print button opens browser print. The print stylesheet keeps the monthly grid, best rows, assumptions, notes, limits and source reminders.
Limits
This is an educational planning almanac, not a navigation almanac, legal schedule, telescope pointing tool, weather forecast, safety plan or official observatory publication.
Source Notes
Celestial almanac rows need current local verification before travel or publication
CalculationTime keeps the source boundary visible. For precise observing, teaching handouts, photography plans, navigation, safety-critical use or publication, verify against current ephemerides, local moonrise/moonset, twilight, weather, horizon, site access and official almanac data.