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such cases the time of moonrise or moonset will occur on the following day. SHORTLY AFTER MIDNIGHT OF THE DAY MISSIiD. The moon phases occur about one.
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DISTRIBUTED BY:
National Technical Information Service U. S. DEPARTMENT OF COMMERCE
SECURITY CLASSIFICATION OF THIS PAGE (Whan Dal« Bntared) REPORT DOCUMENTATION PAGE (^) BEFORE COMPLETING FORMREAD INSTRUCTIONS I. REPORT NUMBER DR-
2. GOVT ACCESSION NO 3. RECIPIENT'S
dim:
S CATALOG NUMBER
CcS&lCO
4. TITLE (and Subllll«) Moonrise, Moonset & Moon Phases for 1975 5. TYPE OF REPORT & PERIOD COVERED **6. PERFORMING ORG. REPORT NUMBER
David J. Novlan
0. CONTRACT OR GRANT NUMBERf»;
DA Task 1T665702D127-
9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. PROGRAM ELEMENT, PROJECT, TASK AREA & WORK UNIT NUMBERS
II. CONTROLLING OFFICE NAME AND ADDRESS U. S. Army Electronics Command Atmospheric Sciences Laboratory White Sands Missile Range, New Mexico
12. REPORT DATE December 1974 **13. NUMBER OF PAGES
U. S. Army Electronics Command Ft. Monmouth, New Jersey
2JL
16. SECURITY CLASS, (ol ihlt, raport)
UNCLASSIFIED 15«. DECLASSIFICATION/DOWNGRAJING SCHEDULE
16. DISTRIBUTION STATEMENT (ol thla Rapotl)
17. DISTRIBUTION STATEMENT (ol tha abattact anlarad In Block 30, II dlllatanl **from Report)
Reproduced by NATIONAL TECHNICAL INFORMATION SERVICE U S Dopartmcnl of Commorco Sprinoliel'i, VA. 22151
DD 1 JAITTS '^2 EDITIOM OF 1 MOV 6S IS OBSOLETE ' (^) UNCLASSIFIED
SECURITY CLASSIFICATION OF THIS PAGE («tien Data Entered)
TIME OF MOONRISE, MOONSET & MOON PHASES AT WSMR IN 1975
These times were computed for Lat. 32° 23' N, Long. 106° 29' W, (Headquarters, WSMR), from tables in "The American Ephemeris and Nautical Almanac, 1975 , published by the U. S. Naval Observatory. Grep.rwich Time is used in the Almanac, and it is necessary to apply three con rcions to obtain the actual time (MST) of moonrise and moonset for the locxl area. The Times are computed for a level horizon, and mountain ranges will affect the time the moon is observed to rise or set by at least four minutes for every degree of elevation of the mountain tops above the he izontal.
The latitude correction is a simple interpolation for 32.4° between the 30° and 35° latitude columns. The correction to convert from Greenwich to local meridian time is a factor determined by dividing the actual longitude (106.4797°) by 360°, or .295777. After obtaining the difference between moonrise (or moonset) on a given day and the following day from the tables, this difference is multiplied by the foregoing factor. To this result is added the local longitude correction of 5.92 minutes (4 x 1.48°), thereby arriving at the correct time (MST) of moonrise (or moonset). (These values have been tabulated to simplify computations).
Since the moon in its orbital motion around the Earth actually moves from wast to east, and completes its ovoit in 29 1/2 days, moving eastward through the sky about 12.2° each day, it rises about 50 minutes later each day, on the aver-ige, but this time varies from about 24 to 75 minutes during a lunar month due to the eccentricity of the moon's orbit. Besides this, the five-degree inclination of the moon's orbit to the ecliptic produces a north-and-south motion through the sky of from 55 to 57° every lunar month,
DECLINATION gives the position of the moon relative to the Celestial Equator. To obtain the elevation angles of the moon whan it is on the merid- ian (due south), add 57° 37' algebraically to the DECLINATION.
Each month there will be one day near the last quarter when there is no moonrise, and another near the first quarter when there is no moonset. In such cases the time of moonrise or moonset will occur on the following day SHORTLY AFTER MIDNIGHT OF THE DAY MISSIiD. The moon phases occur about one day earlier each month and 10.9 days earlier each year.
In 1975 there will be four eclipses—two of the sun, and two of the moon.
ECLIPSES MAGNITUDE
I. 11 May Partial eclipse of the sun, not visible in North America. II. 25 May Total eclipse of the moon, visible in North America except NNW part 1. III. 3 November: Partial eclipse of the sun, not visible in North America 1. IV. 18-19 November: Total eclipae of the moon, not visible in western part of North America 1.
1
5/21, 7/ 24
0
,
o
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♦ 23° 27', June 22 ♦ 20. 00 , 5/21, 7/ ♦ 15 00 , 5/1, 8/ ♦ 10 00 , 4/16, 8/ + 5 00 , 4/3, 9/l 0 00 , 3/22, 9/
LAT. 32023 ,N, LONG. 106 o 29 rVr
**11. -23 27 , Dec. 22
THIS CHART IS BASED ON STANDARD TDK MTOiniANST-qOth. 105th, etc. LOCAL LONGI-s
^ADAPTED FROM SIITHSONIAN METEOROLOGICAL TABLES^ 6th REVISgD EDITIONa958. P..
FIGURE 2. BASE FOR PLOTTING LUNAR ALTITUDES AND AZIMUTHS
MOON'S POSITIONS FOR 9 AND 23 JANUARY, 1975
Figure 4. ILLUMINATION DUE TO THE MOON *
The illumination due to the moon may be estimated roughly from its altitude and phase in the following manner. When the altitude of the full moon is 65° on a clear night, the illumination on a horizontal plane is approximately 0.03 foot-candles.
When the sun's altitude is 65 degrees, the illumination on a hori- zontal plane is 10,000 foot-candles. The ratio of full moon to sun-plus- sky-light is then roughly three to 1,000,000. Other values for full moon- light follow the same proportion.
»—"Natural Illumination Charts" By Com. Dayton R. E. Brown Dept. of the Navy, Bureau of Ships Report No. 374-1, September 1952
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TABLE I
TIMES OF SUNRISE AND SUNSET, AND BEGINNINGS AND ENDINGS OF CIVIL, NAUTICAL AND ASTRONOMICAL TVTLLIffilT WHITE SANDS MISSILE HANGE, NEW MEXICO LAT. 32° 23' N; LONG. 106° 29' W.
RISE 1
0700 j 0652 0642 0631 0618 0607
05a 0538 0531 0522 0511 0500 0447
1839 I 1847 1854 1902 1910 i 1918 1 1926
. 1933 1941 APR. 1 APR. 11 | APR. 21 MAY 1 MAY 11 1 MAY 21
MAY 31 1 JUNE 10 JUNE 20 1 JUNE 30
i 1916
i AUG. 19 AUG. 29 SEP. 3 SEP, 18 SEP. 28
i 1915 1911 1904 1855 1845 1833 1Ö 1807 1755
i NOV. 17 NOV. 27 DEC. 7 DEC. 17 DEC. 27
l^0538
i 1710 1704 1702 1701 1705 1710
1835 j 1830! 1827 1828 1 1830 1835 1
3DA - SUN^S DEPRESSION ANGLE. SDA OF 6° - BEGINNING OR ENDING OF CIVIL TWILIGHT. SDA OF 12° - BEGINNING OR ENDING OF NAUTICAL TWILIGHT. SDA OF 18° - BBOINNINO OR HIDING OP ASTRONOMICAL TWILIGHT.
VALUES WERE DERIVED FROM THE AMERICAN EPHEMERIS & NAUTICAL ALMANAC, AND THE AIR AIMANAC, WHICH ARE PUBLISHED BY THE U.S. NAVAL OBSERVATORY.
FOR DEFINITIONS OF THE THREE TWILIGHTS, SEE "GLOSSARY OF METEOROLOGY."
D-j^ » Declination of Moon at time of Moonrise. D2 = Declination of Moon when it is on the Meridian (Due South). D-j = Declination of Moon at time of Moonset, Declination is given in degrees north (+) or south (-) of the Celestial Equator. •» Illumination values are for midnight, Greenwich (Zulu) Time.
DAY MOONRISE MST
D l
3 K0ONSET MST
PHASES * PERCENT MST ILLUMINATED
(^1 2346) -14.5 \ -11.0 -12.1 1007 74 2 s-15.3 -16.1 1047 LAST 1/4, 2323 64 3 0049 -18.1 -18.7 -19.3 1131 53
4^0149 -20.5^ -20.9^ -21.3^1217 5 0245 -21.8^ -21.9^ -22.0^1307 6 0337 -21.8^ -21.5^ -22. 3^1400 7 0423 -20.8 -20.4^ -20.1^1454 8 0505 -18.7 -18.2^ -17.6^1549 9^0543 -15.9^ -14.9^ -14.1^1644 10 0618 -12.2 -11.2 -10.3 1738 NEW.^2217 11 0650 -8.3^ -7.2^ -.6.1^1832
(^12 0720) -3.7 -2.7 -1.7 1925 01
13 0749 +0.6 +1.2^ +2.9^2018
14 0819 +5.9 +6.7^ +7.5^ •^2112
(^15 0850) +9.2 +10.5 +11.7 2206 12
16 0923 +13.4^ +14.5^ +15.5^2302
(^17 1000) +16.9 +17.4 v —...^ —^28 (^18 1042) +19.5 +20.0 (^) > '+17.7 0000 37 19 1129 +21.3^ +21.5^ N^ '+20.7^0058 FIRST^ 1/4,^0039 (^20 1223) +21.9 +21.7 s ^+21.8 0155 57 (^21 1324) +21.0 +20.4 s '+21.5 0251 68 22 1429 +18.7 +17.7 x '+19.8 0344 78
24 1649 +10.1^ +8.5^ v^ +12.3^ 0519.^93 25 1800 +4.3 x _^ +7.0^0602 FULL,^1815 (^26 1911) -1.5 v N^ +2.9 +1.5 0642 100 27 2020 -7.1^ v ^^ -2.9^ -4.3^0721 28 2128 -12.4 (^) N ^ -8.5 -9.8^ |^0801 |^94 \
1
TIMES OF MOONRISE, MOONSET AND MOON PHASES FOR 1975
MARCH 1975
D l
(^1 2235) -16.5 v -13.4 -14.4 0843 87
3 —^ ...^ —^ —^ —^ V^ -20.0 -20.4 1014 69 1 4 0037 -21.3^ -21.5^ -21,6^1103 LAST,^1320
!^5
(^21 1214) +19.5 +18.6 v ' +20.5 0135 52 22 1319 +16.6^ +15.5 (^) v k (^) +17.6 0224 63
123 1427 +12.4^ +11.2^ s
73
I
24 1535 +7.4^ +6.0^ v v (^) +9.9 0351 83
25 1645 +1.8^ + .4^ ,^ v^ +4.5 0432 91 (^26 1755) -4.0 -5.5 v v^ -1.1 0511 97 27 1904 -9.6^ ,^ s (^) -6.9. 0551 FULL, 0336 100 |28 (^2013) -14.1. v^ -10.7 -11.8 0633 99 29 2119 -18.4^ v^ v (^) -14. -14.1 0716 96 ho^2223 -20.4^ v
I
31
/I
k
JD]_ a^ Declination of Moon at time of Moonrise. p2 " Declination of Moon when it is on the Meridian (Due South). Do = Declination of Moon at time of Moonset. 1 "^ 1
TIMES OF MOONRISE, MOONSET AND MOON PHASES FOR 1975
MAY 1975
D
1 6 0225 +.5^ -1.1^ -2.7^1453 25
1
8
lie 0439 +16.5 +17.3 +18.1^1837 02
I
24 1849 -20.3 (^) N -19.1 0429 FULL,^2251
v (^) -21.2 -21.
bo^2323 -9.7^ v -12.7^ -11.8^1003
|D^ ■ Declination of Moon at time of Moonrise. p2 = Declination of Moon when it is on the Meridian (Due South), P3 = Declination of Moon at time of Moonset, IDeclination is given in degrees north (+) or south (-) of the Celestial [Equator. « Illumination values are for midnight, Greenvrich (Zulu) Time, j
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TIMES OF MOONRISE, MOONSET AND MOON PHASES FOR 1975
JUNE 1975
D
D 3
KOONSET MST
PHASES * PERCENT MST ILLUM1NATED|
1
(^6) 0235 +15.1 +16.0 +17.0 1625 15 1
7 0316 +18.2^ +18.9^ +19.6^1724
|24^2006 -18.0^ v^ '^ -19.8^ -19.5^0557 100
l^o.^2326 +5.5^ v^
«w
/I
r3 " iDeclir {Equate
Declination of Moon at time of Moonrise. Declination of Moon when it is on the Meridian Declination of Moon at tine of Moonset, nation is given in degrees north ('•) or south (-) jr. ♦ Illumination values are for midnight, Ore
(Due South).
of the Celestial enwich (Zulu) Time. |
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TIMES OF MOONRISE, MOONSET AND MOON PHASES FOR 1975
- INCLUDING DECLINATIONS AND PERCENT ILLUMINATED
AUGUST 1975
DAY MOONRISE MST
3
K00NSET MST
PHASES * PERCEIT MST ILLUMINATED
(^1) +18.8 +19.5 1353 44 1 (^2) 0031 +20.3 +20.6 +20.9 1450 34 1 (^3) 0122 +21.1 +21.0 +21.0 1546 24 4^0219 +20.7^ +20.3^ +20.0^1639 5^0322 +19.1^ +18.3^ +17.5^1730 09 t
6. 0429 +16.0^ +15.0^ +13.7^1816^03 I 7^0538 +11.7^ +10.7^ +9.1^1859 NEW,^0457
9 07S6^ +1.0^ -.4^ -1.8^2019
13 1222 -17.6 -18.2 -18.9 <;3W^ FIRST^ 1/4,^1924 114^1324 -20.0^ -20.3 -20.6^ •^2358 115 3.4 ?.l^ -21.0^ -21.0^ v —^60 16 1^14^ -20.8^ -20.6^ v ' -21.1^0050 17^1601 -19.5^ -19.1^ v ' -20.4^0144
19^1722 -14.1^ -13.3^ v ' -16.0^0336
(^21) (^1829) -6.5 -5.4 v v^ -8.6 0526 FULL, 1248 99 (^22) 1859 -2.3 x -4.3 0620 100 j 123 1929 +2.1^ v '^ -1.1^ ±0^0713^99
(^128) 2225 +19.3 s k^ +17.6 +18.3. 1143 69 29 2313 +20.7 v s^ +19.7 +20.1! 1238. LAST^ 1/4,^1620 30 _..^ __.^ +20.8^ +20.9^^1 13?.3^50 31^0006 +20.9^ +20.7^ +20.5^ i^ 1426-^39
1 /l
k - P2 ■
P3 " jDeclir {Equate
Declination of Moon at time of Moonrise. Declination of Moon when it is on the Meridian (Due South). Declination of Moon at time of Moonset. lation is given in degrees north (+) or south (-) of the Celestial
r. « Illumination values are for midnight, Greenwich (Zulu) Time. |
TIMES OF MOONRISE, MOONSET AND MOON PHASES FOR 1975 INCLUDING DECLINATIONS AND PERCENT ILLUMINATED
SEPTEMBER 1975
D
3
3 0314 +14.0 +12 „8 +11.6^1649 4 0423 +9.3^ +8.0^ +6.6^1731 5 0533 +3.9^ +2.5^ +1.2^1812 NEW,^1219 01 j 6 0643 -1.7 -3.1 -4.5 1853 00 1 7 0753 -7.3 -8.5 -9.7^1934 8 0902 -12.2 -13.2^ -14.2^2018
114 1442 -17.9 -17.3 ^ ^-194 • 0036 65
h-j>^1522 -15.1^ -14.4^ v^ ' -16.7^0132 |l6 (^1358) -11.6 -10.8 v ^ -13.6 0227 82
17 1130 -7.8^ -6.9^ v^ h (^) -9.9 0322 89
lie 1702 -3.7 -2.6 (^) v -6.0 0415 94
19 1732 +0.6 +1.7 v -1.5^0508 98 1 |20 (^1803) +4.9 ^ +2.8' 0602 FULL, 0450 100 j
21 1834 +8.9 s ' +6.0 +7.1 0655 100
|22 (^1908) +12.7 s +9.9 +10.8 0748 98
i
(^24) 2025 +18.4 x +16.7 +17.4 0937 89
(^26 2159) +20.7 v +20.3 +20.6 1126 74 27 2254 +20.2^ ^^ +20.7^ +20.6^1218 28 2353 +18.5 s +19.8 +19.4 i 1308 LAST^ 1/4,^0446 29 j^ _^ +17.8 +17.0 i 1355 i
45
ho (^) (^0056) +1S.fi +14.6 +13.5 1440 34 1
/I JD^ =» Declination of Moon at time of Moonrise. P2 " Declination of Moon when it is on the Meridian (Due South). | JD^ = Declination of Moon at time of Moonset. JDeciination is given in degrees north (+) or south (-) of the Celestial {Equator. * Illumination values are for midnight, Giaenvrlch (Zulu) Time. |
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