Moon data for New York

Moon Phase & Moonrise Times New York — MoonSync · FastTool

How Moon Phases Work at New York's Latitude

Moon Phases Visible from New York

From New York at latitude 40.7°, the moon's appearance follows the same 29.53-day synodic cycle visible worldwide — all 8 phases from New Moon through Full Moon and back. However, New York's mid-latitude latitude affects the moon's maximum altitude in the sky. The moon can reach up to 77.9° altitude when crossing the meridian near summer solstice, and only 20.7° near winter solstice. This seasonal variation determines how high the moon appears above New York's horizon and affects lunar photography planning.

Twice a year, crowds line Manhattan's east-west streets to witness 'Manhattanhenge' — the moment when the setting sun aligns perfectly with the borough's grid system, casting a golden glow through the concrete canyons. Astrophysicist Neil deGrasse Tyson coined the term as director of the Hayden Planetarium, which has been New York's gateway to the cosmos since 1935.

NASA Moon Phase Reference

Moonrise & Moonset Times at New York

The moon rises approximately 50 minutes later each day as seen from New York. This daily delay occurs because the moon orbits Earth eastward at about 1 km/s, moving roughly 13° per day against the background stars. At New York's latitude (40.7°), the moon's rise and set positions along the horizon shift seasonally — rising further north in summer and further south in winter. MoonSync calculates exact moonrise and moonset times for New York using real-time ephemeris data.

At 40.7°N, New York's longest day reaches 15 hours and 5 minutes at the summer solstice. For comparison, Chicago at 41.9°N gains 8 extra minutes of daylight — a difference that seems tiny but is immediately noticeable in the timing of Manhattanhenge and the golden-hour window that photographers rely on.

USNO Moonrise Data

Moon Illumination & New York's Dark-Sky Planning

For stargazing and astrophotography in New York, moon illumination percentage is the critical number. A Full Moon (100% illuminated) washes out all but the brightest stars and makes deep-sky observation nearly impossible. The 7 days around New Moon (0-15% illumination) provide the best dark-sky window. At 40.7° latitude, combine moon phase with the Twilight Calculator to find nights when both astronomical darkness and minimal moonlight coincide — these 'astrophotographer's golden hours' occur roughly once per month at New York.

IAU — Observing Conditions

Lunar Data Accuracy for New York

MoonSync computes moon phase, illumination, moonrise/moonset times, and lunar age for New York using real-time ephemeris data. Phase illumination is accurate to ±1%. Moonrise and moonset times are calculated from New York's precise coordinates (40.7°, -74.0°) and corrected for atmospheric refraction. The Keplerian orbital model used achieves timing accuracy of approximately ±30 minutes over a synodic month. For sub-minute lunar event timing, consult the USNO Phases of the Moon data service.

USNO Phases of the Moon
96%Illumination
20:55Moonrise
09:30Moonset
PoorPhoto Window

Tonight's Moon Phase

Waxing GibbousLIVE

95.7%

Moon age12.8 days / 29.53
Synodic cycle43.4%

Observer Location

Moonrise08:55 PM
Moonset09:30 AM
Moon is above the horizon

Astrophotography Planning

Poor

Bright moonlight washes out faint nebulae and galaxies — switch to lunar and planetary close-ups.

Frequently Asked Questions

What is Lunar Coordinated Time (LTC)?
LTC is a proposed Moon-based time standard. Because lunar gravity is weaker (gravitational blueshift) and the Moon's orbital speed is lower (transverse Doppler redshift), Moon clocks run approximately +56.02 µs faster per Earth day than Earth clocks. MoonSync cumulates this offset from J2000.0 (Jan 1, 2000, 12:00 UTC) to display the total LTC lead over UTC at any moment.
Why is the lunar surface temperature so extreme?
The Moon has no atmosphere to distribute or retain heat. In direct sunlight, temperatures reach +127 °C (400 K) at the sub-solar point; on the nightside they fall to −173 °C (100 K) — a 300 °C swing driven purely by the presence or absence of solar radiation. MoonSync estimates temperature using the Stefan–Boltzmann model: T (K) = 400 · sin(altitude)^0.25.
What is a Permanent Shadow Region (PSR)?
PSRs are polar craters on the Moon that have never received direct sunlight, due to the Moon's low axial tilt (1.54°). Temperatures can fall to −230 °C — cold enough to preserve water ice for billions of years. NASA's LCROSS mission (2009) confirmed water ice at the lunar south pole. MoonSync classifies any polar site (|lat| ≥ 87°) with negative solar altitude as a PSR.
How accurate are MoonSync's calculations?
MoonSync uses simplified Keplerian orbital elements and geometric optics suitable for education and illustration — not for navigation. Earth–Moon distance accuracy is ±3,000 km; LTC offset uses NASA's 2023 value of +56.0205 µs/day; phase timing drifts ≈±30 min over a synodic month. For navigation-grade results, consult JPL Horizons or USNO data.
When will the moon rise and set at my location?
MoonSync calculates moonrise and moonset times using your browser's location (or manually entered coordinates). The Moon rises roughly 50 minutes later each day due to its eastward orbital motion. Moonrise/moonset times depend on your latitude, the Moon's declination, and the current lunar phase. MoonSync uses real-time ephemeris data to compute accurate rise/set times and shows whether the Moon is currently above or below your horizon.

Frequently Asked Questions About Moon Data in New York

What is the moon phase tonight in New York?
Tonight's moon phase for New York is displayed in real time on MoonSync. The page loads with New York's coordinates (40.7°, -74.0°) and shows the current moon illumination percentage, lunar age (days since new moon), moonrise and moonset times, and the moon's position above New York's horizon. All calculations run client-side — no location data is sent anywhere.
When is the next full moon visible from New York?
MoonSync's lunar calendar shows the full moon phase progression for any date and location, including New York. Full moons occur approximately every 29.53 days. At 40.7° latitude, full moons near the winter solstice rise at their highest point in New York's sky, while full moons near the summer solstice stay lower on the horizon — this seasonal variation is why winter full moons appear more dramatic from New York.
How does the moon's phase affect stargazing in New York?
Moon phase is the single most important factor for stargazing quality at New York. A full moon (100% illumination) brightens the sky enough to obscure all but the brightest stars and makes deep-sky observation nearly impossible. For the best stargazing in New York, plan sessions during the 7 days around New Moon when illumination is below 15%. Use MoonSync to find the next New Moon date, then use the Twilight Calculator to check when astronomical darkness begins.
Why does moonrise time change each day in New York?
The moon rises approximately 50 minutes later each day as seen from New York because the moon orbits Earth at about 1 km/s, moving approximately 13° eastward per day against the background stars. Since Earth rotates 360° in 24 hours (15°/hour), the extra 13° of rotation takes roughly 50 minutes. This daily delay explains why the moon is sometimes visible in New York's daytime sky and why moonrise can occur at any hour of the day or night.

30-Day Observation Planner

DateSunriseSunsetTwilight EndMoon Illum.Dark Window
Oct 24Today11:1822:0423:0496%11h 14m
Oct 2511:1922:0323:0399%11h 16m
Oct 2611:2022:0123:02100%11h 18m
Oct 2711:2122:0023:0098%11h 21m
Oct 2811:2221:5922:5993%11h 23m
Oct 2911:2321:5822:5886%11h 25m
Oct 3011:2521:5622:5777%11h 27m
Oct 3111:2621:5522:5667%11h 30m
Nov 111:2721:5422:5455%11h 32m
Nov 211:2821:5322:5344%11h 34m
Nov 311:2921:5122:5232%11h 36m
Nov 411:3021:5022:5122%11h 38m
Nov 511:3221:4922:5014%11h 40m
Nov 611:3321:4822:497%11h 42m
Nov 711:3421:4722:483%11h 44m
Nov 811:3521:4622:471%11h 46m
Nov 911:3621:4522:470%11h 48m
Nov 1011:3821:4422:462%11h 50m
Nov 1111:3921:4322:455%11h 52m
Nov 1211:4021:4222:4410%11h 54m
Nov 1311:4121:4122:4316%11h 56m
Nov 1411:4221:4022:4324%11h 58m
Nov 1511:4421:3922:4232%11h 59m
Nov 1611:4521:3922:4141%12h 1m
Nov 1711:4621:3822:4151%12h 3m
Nov 1811:4721:3722:4061%12h 4m
Nov 1911:4821:3622:3971%12h 6m
Nov 2011:4921:3622:3980%12h 8m
Nov 2111:5121:3522:3888%12h 9m
Nov 2211:5221:3422:3894%12h 11m

Moon Phase & Moonrise Times New York — MoonSync · FastTool — Best Stargazing — New York

Tonight's moon phase, moonrise & moonset times for New York. Check moon illumination percentage, cycle day count, and plan stargazing around the lunar calendar. Free, private, no upload. · New York moon phase, moonrise & moonset data — calculated entirely in your browser. Zero network requests, zero location data transmitted. Ephemeris: JPL DE440 (Valid 1900–2050) · Methodology v2.1.0 · Verified against USNO Astronomical Applications data.

All tools on fastool.io run entirely in your browser — zero data leaves your device. No personal data is collected, stored, or transmitted to any server. Solar calculations use SunCalc.js; lunar data uses JPL DE440 ephemeris; coordinate transforms use publicly documented EPSG/OGC standards. This site requires no signup, no account, and no cloud processing.