Greatest Annual Lunar Standstills: 1701 to 1800

Universal Time


Introduction

The Moon's orbit is inclined ˜5.1° to Earth's orbit around the Sun. As a result, the Moon’s declination changes rapidly over the course of the draconic month. The extremes in the Moon's southern (or negative) declination ranges from about -18.2° to -28.7°. Similarly, the extremes in the Moon's northern (or positive) declination ranges from about +18.2° to +28.7°.

As its declination changes, so does the azimuth of the lunar rise and set positions along the horizon. When the Moon reaches its minimum or maximum declination, the changing rise an set azimuths halt and reverse direction. This event occurs twice each draconic month and is called lunar standstill.

The gravitational pull of the Sun also forces the moon's orbit to slowly rotate westward on its axis ˜19° per year. In a period of ˜18.6 years, the nodes of the lunar orbit make one complete revolution. The effect on the Moon's declination extremes and lunar standstill points are to change them gradually from month to month.

The monthly declination extremes (and lunar standstills) are further modulated over the 18.6 year precession of the Moon's orbital nodes.

The table below gives the date and time (Universal Time) as well as the Moon's declination for the greatest lunar standstills each year during for the century 1701 to 1800 . For a table of monthly lunar standstills over this century, see Monthly Lunar Standstills: 1701 to 1800 .

The azimuth of the Moon at moonrise depends on the Moon's declination (δ) and the observer's geographic latitude (φ). It can be calculated as follows:

        A = ArcCos (sin δ / cos φ)
        
        where
        
        A = azimuth
        δ = declination of the Moon
        φ = observer's latitude (north +, south -)
        

The azimuth of the Moon at moonset can be calculate by simply subtracting the moonrise azimuth from 360°.

Additional information on lunar standstill is available in Wikipedia

The values of ΔT used to convert Dynamical Time to Universal Time in this 100-year table range from 8 to 13 seconds. The uncertainty in the value of ΔT grows large for dates in the distant past or future.

Greatest Annual Lunar Standstills: 1701 to 1720

Universal Time (UT1)

 
 Year          Minimum         Dec            Maximum         Dec 
                               (°)                            (°)

 1701        Dec 29  16:34   -20.697 +      Dec 16  18:12    20.693 +      
 1702        Dec 20  00:44   -22.306 +      Dec 07  00:06    22.296 +      
 1703        Dec 10  08:44   -23.997 +      Dec 24  05:16    24.001 +      
 1704        Nov 29  16:55   -25.561 +      Dec 13  00:11    25.553 +      
 1705        Nov 19  23:45   -26.882 +      Nov 05  09:55    26.879 +      
 1706        Nov 10  01:10   -27.895 +      Oct 26  09:31    27.906 +      
 1707        Oct 03  11:14   -28.551 +      Oct 16  15:08    28.549 +      
 1708        Sep 21  23:00   -28.755 +      Sep 08  18:04    28.736 +      
 1709        Mar 04  14:16   -28.676 +      Mar 19  01:14    28.667 +      
 1710        Feb 22  09:47   -28.189 +      Feb 09  20:10    28.175 +      

 1711        Feb 12  13:59   -27.278 +      Jan 30  15:50    27.279 +      
 1712        Jan 06  14:52   -26.028 +      Jan 20  07:59    26.033 +      
 1713        Jan 23  08:38   -24.507 +      Jan 09  01:54    24.542 +      
 1714        Jan 13  14:35   -22.872 +      Jan 26  08:09    22.829 +      
 1715        Jan 03  17:53   -21.231 +      Jan 16  16:29    21.185 +      
 1716        Jan 21  06:29   -19.680 +      Jan 07  06:24    19.744 +      
 1717        Jan 10  11:37   -18.757 +      Jan 24  10:12    18.666 +      
 1718        Dec 22  06:17   -18.855 +      Dec 09  06:23    18.828 +      
 1719        Dec 12  16:20   -19.823 +      Dec 27  03:08    19.851 +      
 1720        Dec 29  14:43   -21.300 +      Dec 16  08:57    21.304 +      

Greatest Annual Lunar Standstills: 1721 to 1740

Universal Time (UT1)

 
 Year          Minimum         Dec            Maximum         Dec 
                               (°)                            (°)

 1721        Dec 20  00:23   -22.972 +      Dec 06  08:30    22.966 +      
 1722        Dec 10  08:33   -24.613 +      Nov 26  03:51    24.603 +      
 1723        Nov 30  14:27   -26.087 +      Nov 16  00:21    26.080 +      
 1724        Nov 19  14:43   -27.312 +      Nov 05  01:56    27.318 +      
 1725        Oct 13  00:10   -28.213 +      Oct 26  08:28    28.211 +      
 1726        Oct 02  12:16   -28.686 +      Sep 19  11:18    28.665 +      
 1727        Mar 15  04:04   -28.745 +      Mar 29  17:54    28.738 +      
 1728        Mar 04  01:01   -28.527 +      Feb 20  11:49    28.513 +      
 1729        Feb 22  06:18   -27.858 +      Feb 09  05:32    27.862 +      
 1730        Jan 16  08:01   -26.812 +      Jan 29  20:04    26.821 +      

 1731        Jan 06  14:12   -25.481 +      Jan 19  13:32    25.485 +      
 1732        Jan 24  04:26   -23.882 +      Jan 09  13:59    23.932 +      
 1733        Jan 13  04:17   -22.207 +      Jan 26  04:36    22.142 +      
 1734        Jan 03  04:26   -20.602 +      Jan 16  18:34    20.532 +      
 1735        Jan 20  16:01   -19.230 +      Jan 07  09:52    19.277 +      
 1736        Jan 11  00:51   -18.564 +      Dec 18  14:25    18.538 +      
 1737        Dec 22  02:45   -19.154 +      Dec 09  02:14    19.143 +      
 1738        Dec 12  15:50   -20.348 +      Dec 26  16:20    20.382 +      
 1739        Dec 30  15:17   -21.940 +      Dec 16  17:35    21.941 +      
 1740        Dec 19  23:26   -23.605 +      Dec 05  15:45    23.596 +      

Greatest Annual Lunar Standstills: 1741 to 1760

Universal Time (UT1)

 
 Year          Minimum         Dec            Maximum         Dec 
                               (°)                            (°)

 1741        Dec 10  04:19   -25.197 +      Nov 25  15:03    25.188 +      
 1742        Nov 30  03:30   -26.601 +      Nov 15  18:27    26.605 +      
 1743        Oct 23  12:41   -27.721 +      Nov 06  01:37    27.721 +      
 1744        Oct 12  01:43   -28.452 +      Oct 26  09:31    28.435 +      
 1745        Oct 01  19:41   -28.736 +      Sep 19  07:29    28.735 +      
 1746        Mar 14  16:45   -28.710 +      Mar 02  02:56    28.697 +      
 1747        Mar 04  22:58   -28.302 +      Feb 19  18:52    28.309 +      
 1748        Jan 27  01:14   -27.488 +      Feb 09  08:17    27.501 +      
 1749        Jan 16  06:34   -26.349 +      Jan 29  01:49    26.353 +      
 1750        Jan 06  07:43   -24.923 +      Jan 19  03:07    24.918 +      

 1751        Jan 23  14:51   -23.215 +      Jan 09  10:42    23.264 +      
 1752        Jan 13  11:58   -21.533 +      Jan 27  07:38    21.441 +      
 1753        Jan 02  14:23   -20.055 +      Jan 16  21:40    19.973 +      
 1754        Jan 20  06:22   -18.888 +      Jan 07  10:04    18.941 +      
 1755        Dec 05  00:51   -18.647 +      Dec 19  07:37    18.700 +      
 1756        Dec 22  04:23   -19.566 +      Dec 08  14:58    19.557 +      
 1757        Dec 12  17:47   -20.932 +      Dec 26  01:56    20.951 +      
 1758        Dec 30  13:17   -22.568 +      Dec 16  03:34    22.563 +      
 1759        Dec 20  17:13   -24.232 +      Dec 06  05:55    24.225 +      
 1760        Dec 09  15:33   -25.774 +      Nov 25  10:59    25.780 +      

Greatest Annual Lunar Standstills: 1761 to 1780

Universal Time (UT1)

 
 Year          Minimum         Dec            Maximum         Dec 
                               (°)                            (°)

 1761        Nov 02  00:56   -27.084 +      Nov 15  18:33    27.088 +      
 1762        Oct 22  15:24   -28.058 +      Nov 06  01:56    28.047 +      
 1763        Oct 12  11:10   -28.617 +      Sep 29  22:46    28.618 +      
 1764        Mar 24  08:54   -28.730 +      Sep 18  16:46    28.727 +      
 1765        Mar 14  15:54   -28.597 +      Mar 01  07:56    28.605 +      
 1766        Feb 05  18:23   -28.038 +      Feb 18  20:44    28.055 +      
 1767        Jan 26  22:40   -27.119 +      Feb 08  14:45    27.122 +      
 1768        Jan 16  21:35   -25.850 +      Jan 02  10:40    25.845 +      
 1769        Jan 05  16:58   -24.299 +      Jan 19  01:29    24.272 +      
 1770        Jan 22  20:24   -22.533 +      Jan 09  11:50    22.575 +      

 1771        Jan 12  21:29   -20.923 +      Jan 27  09:41    20.822 +      
 1772        Jan 03  06:05   -19.582 +      Jan 17  19:13    19.509 +      
 1773        Jan 20  05:03   -18.614 +      Jan 07  03:25    18.681 +      
 1774        Dec 05  03:46   -18.916 +      Dec 18  19:42    18.967 +      
 1775        Dec 23  06:09   -20.049 +      Dec 09  01:08    20.026 +      
 1776        Dec 12  16:55   -21.540 +      Dec 25  15:11    21.546 +      
 1777        Dec 30  04:58   -23.217 +      Dec 15  20:45    23.215 +      
 1778        Dec 20  02:55   -24.850 +      Dec 06  03:24    24.857 +      
 1779        Nov 12  13:04   -26.318 +      Nov 26  11:12    26.325 +      
 1780        Nov 01  05:27   -27.514 +      Nov 15  17:52    27.507 +      

Greatest Annual Lunar Standstills: 1781 to 1800

Universal Time (UT1)

 
 Year          Minimum         Dec            Maximum         Dec 
                               (°)                            (°)

 1781        Oct 22  03:04   -28.331 +      Oct 09  13:28    28.332 +      
 1782        Oct 12  07:27   -28.698 +      Sep 29  06:07    28.715 +      
 1783        Mar 25  09:05   -28.729 +      Mar 11  20:54    28.734 +      
 1784        Feb 16  11:28   -28.444 +      Feb 29  09:36    28.460 +      
 1785        Feb 05  14:25   -27.766 +      Feb 18  04:25    27.765 +      
 1786        Jan 26  11:12   -26.683 +      Jan 12  01:46    26.673 +      
 1787        Jan 16  04:17   -25.271 +      Jan 02  08:15    25.270 +      
 1788        Jan 05  22:56   -23.656 +      Jan 20  02:54    23.611 +      
 1789        Jan 22  06:05   -21.888 +      Jan 09  10:55    21.937 +      
 1790        Jan 12  14:58   -20.348 +      Jan 27  04:13    20.253 +      

 1791        Jan 03  05:24   -19.161 +      Jan 17  09:06    19.107 +      
 1792        Dec 14  14:30   -18.569 +      Dec 27  23:49    18.587 +      
 1793        Dec 05  06:45   -19.272 +      Dec 18  08:18    19.306 +      
 1794        Dec 23  03:28   -20.594 +      Dec 08  15:47    20.561 +      
 1795        Dec 13  08:34   -22.186 +      Dec 26  11:19    22.188 +      
 1796        Dec 29  13:35   -23.854 +      Dec 15  19:34    23.861 +      
 1797        Nov 22  01:14   -25.443 +      Dec 06  03:29    25.450 +      
 1798        Nov 11  19:51   -26.830 +      Nov 26  09:14    26.824 +      
 1799        Nov 01  19:22   -27.882 +      Oct 20  03:31    27.880 +      
 1800        Oct 23  00:43   -28.516 +      Oct 09  19:13    28.529 +      

Acknowledgement

All calculations are by Fred Espenak, and he assumes full responsibility for their accuracy. Algorithms used in predicting the Moon's lunar standstills are based on Astronomical Algorithms by Jean Meeus (Willmann-Bell, Inc., Richmond, 1998).

Permission is granted to reproduce this data when accompanied by a link to this page and the credit line:

    "Greatest Annual Lunar Standstills Table Courtesy of Fred Espenak, www.Astropixels.com".