DE405 Lunar Ephemeris Calculator
Based on the 600-year NASA/JPL DE405 Ephemeris Model
Spanning the Period From 1600 to 2200 on the Modern Gregorian Calendar
Calendar Date
Year / Month / Day
Time
hh:mm:ss
Date/Time Mode
LT | UT | TT
Local Time Zone Offset From UT
±hh:mm (Neg/Pos = West/East)
Local Time (
LT
) =
UT
Default Location:
America/New_York
- Your Local Latitude, Lonitude and Time Zone May be Different
Geographic Location Used For Local Topocentric Computations
15.1716 deg
Latitude
Deg.ddd or DMS (Neg=S)
Longitude
Deg.ddd or DMS (Neg=W)
Sea-Level Elevation
meters
QUICK DE405 LUNAR EPHEMERIS STATISTICS ---------------------------- DATE/TIME/MODE/ZONE/LOCATION Date = 2025 Aug 24 Sun Time = 08:48:20 LT Time Zone = UT-04:00 Delta T = +00:01:15 Latitude = +42.6764593 deg N = +42° 40' 35.25" Longitude = -76.8230111 deg W = -76° 49' 22.84" = -05h 07m 17.52s Elevation = +0.0 m JD TT = 2460912.03443288 = Working Julian Date on TT scale Phase Angle = 15.1716 deg Visual Phase = Waxing crescent, just past new moon Horizon Altitude = +10.587° ABOVE local horizon - Ascending in E Direction Azimuth = 93.340° = E (N=0, E=90, S=180, W=270) ====================================================================== TIME LT LOCAL BASIC EVENTS SCHEDULE FOR DATE -------- ------------------------------------ 06:25 Sunrise 07:43 Moonrise - Waxing crescent, just past new moon 19:54 Sunset 20:34 Moonset ====================================================================== GEOCENTRIC LUNAR COORDINATES AND DISTANCE Right Ascension = 11h 11m 35.899s = 11.1933053 h = 167.8995795° Declination = +05° 20' 41.24" = +5.344790° Distance = 243595.252 mi = 392028.557 km Angular Diameter = 30' 28.98" = 30.48302' = 1828.98" = 0.5080504° Eq. Horiz. Parallax = 55' 55.99" = 0.9322190° = 55.93314' = 3355.99" Local Hour Angle = -05h 17m 05.33s = -5.2848125 h = -79.2721870° ----------------------------- TOPOCENTRIC LUNAR COORDINATES Right Ascension = 11h 14m 18.817s = 11.2385603 h = 168.5784045° Declination = +04° 43' 42.60" = +4.728499° Radial Velocity = +161.75 km/h = +100.51 mi/h = Receding from Earth Orbital Velocity = 3626.24 km/h = 2253.24 mi/h AUGUST 2025 - Lunar Quarter Phases, Apogees and Perigees For Time Zone UT-04:00 Applied NASA Delta T = +00:01:15 Date and Time LT Lunar Event --------------------- ----------------------------------- 2025 Aug 01 Fri 08:41 First Quarter Moon = Phase 90 2025 Aug 01 Fri 16:36 Apogee 251134.22 mi = 404161.35 km 2025 Aug 09 Sat 03:55 Full Moon = Phase 180 2025 Aug 14 Thu 13:59 Perigee 229465.10 mi = 369288.28 km 2025 Aug 16 Sat 01:12 Last Quarter Moon = Phase 270 2025 Aug 23 Sat 02:06 New Moon = Phase 0/360 2025 Aug 29 Fri 11:34 Apogee 251374.34 mi = 404547.78 km 2025 Aug 31 Sun 02:25 First Quarter Moon = Phase 90 There are two first quarter moons in August of 2025 LT. There are also two lunar apogees in August of 2025 LT.
EXTENDED DE405 LUNAR EPHEMERIS STATISTICS AND HOURLY TABLES Time Mode = LT Time Zone = UT-04:00 ---------------------------------------------------------- CALENDAR DATE TIME JULIAN DATE JD NUMBER --------------- ----------- ---------------- ----------- 2025 Aug 24 Sun 08:48:20 LT 2460911.86689815 2460912 LT -04:00:00 TZ -0.16666667 2025 Aug 24 Sun 12:48:20 UT 2460912.03356482 2460912 UT +00:01:15 dT +0.00086806 2025 Aug 24 Sun 12:49:35 TT 2460912.03443288 2460912 TT JD TT = 2460912.03443288 = Working Julian Date on TT scale Latitude = +42.6764593 deg N = +42° 40' 35.25" Longitude = -76.8230111 deg W = -76° 49' 22.84" = -05h 07m 17.52s Elevation = +0.0 m ----------- EARTH GEOID ρ × sin(φ') = +0.6743577407 ρ × cos(φ') = +0.7363265249 ---------------------- APPARENT SIDEREAL TIME Greenwich 11h 01m 48.10s = 11.0300269 h = 165.4504040 deg Local 05h 54m 30.57s = 5.9084929 h = 88.6273929 deg ================================================================= LUNAR POSITION, DISTANCE, PHASE AND LOCAL SUN/MOON RISE/SET TIMES Date = 2025 Aug 24 Sun Time = 08:48:20 LT Time Zone = UT-04:00 Delta T = +00:01:15 JD TT = 2460912.03443288 GEOGRAPHIC LOCATION Latitude = +42.6764593 deg N = +42° 40' 35.25" Longitude = -76.8230111 deg W = -76° 49' 22.84" = -05h 07m 17.52s Elevation = +0.0 m GEOCENTRIC LUNAR COORDINATES Right Ascension = 11h 11m 35.899s = 11.1933053 h = 167.8995795° Declination = +05° 20' 41.24" = +5.344790° Distance = 243595.252 mi = 392028.557 km Phase Angle = 15.17165° Visual Phase = Waxing crescent, just past new moon Angular Diameter = 30' 28.98" = 30.48302' = 1828.98" = 0.5080504° Eq. Horiz. Parallax = 55' 55.99" = 0.9322190° = 55.93314' = 3355.99" Radial Velocity = +161.75 km/h = +100.51 mi/h = Receding from Earth Orbital Velocity = 3626.24 km/h = 2253.24 mi/h TOPOCENTRIC LUNAR COORDINATES Right Ascension = 11h 14m 18.817s = 11.2385603 h = 168.5784045° Declination = +04° 43' 42.60" = +4.728499° Horizon Altitude = +10.587° ABOVE local horizon - Ascending in E Direction Azimuth = 93.340° = E (N=0, E=90, S=180, W=270) Local Hour Angle = -05h 17m 05.33s = -5.2848125 h = -79.2721870° Light Time = 1.2806 sec = 1-way surface-to-surface = 2.5613 sec = 2-way surface-to-surface -------- ------------------------------------------------ TIME LT LOCAL EVENTS SCHEDULE FOR DATE 06:25 Sunrise 07:43 Moonrise - Waxing crescent, just past new moon 19:54 Sunset 20:34 Moonset ----------------------------------------------------------------- HOURLY GEOCENTRIC LUNAR COORDINATES, DISTANCE AND PHASE EPHEMERIS DATE = 2025 Aug 24 Sun LT TZ = UT-04:00 = Time Zone Offset From UT (Neg/Pos = West/East) dT = +00:01:15 = NASA Delta T estimate Table Origin for 00:00:00 LT of date = 2460911.66753473 TT LT hh RA Hrs Decl Deg Dist Km Dist Mi Phase Deg -- ---------- ---------- ---------- ---------- --------- -3 10.8202563 +8.278425 390110.063 242403.155 9.3896 -2 10.8521921 +8.031441 390272.916 242504.347 9.8819 -1 10.8840614 +7.784116 390435.763 242605.536 10.3737 00 10.9158655 +7.536469 390598.585 242706.708 10.8651 01 10.9476059 +7.288517 390761.366 242807.856 11.3560 02 10.9792837 +7.040281 390924.089 242908.967 11.8464 03 11.0109001 +6.791779 391086.735 243010.031 12.3363 04 11.0424565 +6.543030 391249.287 243111.036 12.8258 05 11.0739541 +6.294053 391411.727 243211.971 13.3149 06 11.1053942 +6.044866 391574.037 243312.826 13.8034 07 11.1367782 +5.795486 391736.199 243413.589 14.2915 08 11.1681072 +5.545933 391898.194 243514.248 14.7792 09 11.1993824 +5.296225 392060.005 243614.793 15.2663 10 11.2306054 +5.046377 392221.613 243715.211 15.7531 11 11.2617773 +4.796410 392382.999 243815.492 16.2393 12 11.2928992 +4.546340 392544.145 243915.623 16.7251 13 11.3239726 +4.296183 392705.032 244015.594 17.2105 14 11.3549988 +4.045959 392865.641 244115.392 17.6954 15 11.3859789 +3.795683 393025.953 244215.005 18.1798 16 11.4169143 +3.545373 393185.950 244314.423 18.6638 17 11.4478063 +3.295045 393345.612 244413.632 19.1473 18 11.4786560 +3.044716 393504.921 244512.622 19.6304 19 11.5094649 +2.794403 393663.856 244611.380 20.1131 20 11.5402341 +2.544121 393822.399 244709.894 20.5953 21 11.5709648 +2.293888 393980.530 244808.152 21.0770 22 11.6016585 +2.043719 394138.231 244906.143 21.5584 23 11.6323164 +1.793631 394295.481 245003.853 22.0392 24 11.6629396 +1.543639 394452.260 245101.271 22.5197 25 11.6935295 +1.293758 394608.551 245198.386 22.9997 26 11.7240874 +1.044006 394764.332 245295.184 23.4793 27 11.7546144 +0.794397 394919.584 245391.653 23.9584 28 11.7851119 +0.544946 395074.288 245487.781 24.4371 -------- ------------------------------------------------- TIME LT BASIC EVENTS SCHEDULE FOR DATE AND LOCATION 06:25 Sunrise 07:43 Moonrise - Waxing crescent, just past new moon 19:54 Sunset 20:34 Moonset ====================================================================== HOURLY GEOCENTRIC LUNAR DISTANCE, RADIAL VELOCITY AND ORBITAL VELOCITY TABLE INCLUDING ANY APOGEE OR PERIGEE EVENT ON DATE. DATE = 2025 Aug 24 Sun TIME = UT-04:00 dT = +00:01:15 = NASA Delta T estimate For Radial Velocity: Neg/Pos = Approaching/Receding == ======================= =================== ==================== LT GEOCENTRIC DISTANCE RADIAL VELOCITY ORBITAL VELOCITY hh km mi km/h mi/h km/h mi/h -- ---------- ---------- -------- -------- -------- -------- -2 390272.916 242504.347 +162.851 +101.191 3643.894 2264.211 -1 390435.763 242605.536 +162.837 +101.182 3642.286 2263.212 00 390598.585 242706.708 +162.804 +101.162 3640.669 2262.207 01 390761.366 242807.856 +162.754 +101.131 3639.024 2261.185 02 390924.089 242908.967 +162.687 +101.089 3637.414 2260.185 03 391086.735 243010.031 +162.601 +101.035 3635.770 2259.163 04 391249.287 243111.036 +162.498 +100.972 3634.132 2258.145 05 391411.727 243211.971 +162.377 +100.896 3632.507 2257.135 06 391574.037 243312.826 +162.239 +100.811 3630.858 2256.111 07 391736.199 243413.589 +162.080 +100.712 3629.203 2255.082 08 391898.194 243514.248 +161.906 +100.604 3627.569 2254.067 09 392060.005 243614.793 +161.712 +100.483 3625.919 2253.042 10 392221.613 243715.211 +161.499 +100.351 3624.263 2252.013 11 392382.999 243815.492 +161.268 +100.207 3622.621 2250.992 12 392544.145 243915.623 +161.019 +100.052 3620.953 2249.956 13 392705.032 244015.594 +160.750 +99.886 3619.298 2248.928 14 392865.641 244115.392 +160.463 +99.707 3617.649 2247.903 15 393025.953 244215.005 +160.158 +99.518 3615.995 2246.875 16 393185.950 244314.423 +159.831 +99.314 3614.317 2245.833 17 393345.612 244413.632 +159.488 +99.101 3612.672 2244.810 18 393504.921 244512.622 +159.124 +98.875 3611.015 2243.781 19 393663.856 244611.380 +158.742 +98.638 3609.344 2242.742 20 393822.399 244709.894 +158.339 +98.387 3607.695 2241.718 21 393980.530 244808.152 +157.919 +98.127 3606.035 2240.687 22 394138.231 244906.143 +157.477 +97.851 3604.361 2239.646 23 394295.481 245003.853 +157.017 +97.566 3602.715 2238.623 24 394452.260 245101.271 +156.538 +97.268 3601.067 2237.600 25 394608.551 245198.386 +156.038 +96.958 3599.396 2236.561 26 394764.332 245295.184 +155.519 +96.635 3597.750 2235.538 27 394919.584 245391.653 +154.981 +96.301 3596.100 2234.513 -------- -----------------------------------------------------------
DE405 Lunar Ephemeris Calculator - v2.94 - A PHP Astronomy Program by Jay Tanner
Revised:
2021 June 21 at 06:54:17 AM Monday