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The rise/set search based on hour angles is complicated, and doesn't handle oddities that happen close to the poles. I'm starting to rework rise/set as a more brute force solution that iterates through finite time steps. I also added a series of Moon data for the arctic circle, which includes some of the more painful special cases. For example: Moon 130 80 2034-05-16T13:21Z s Moon 130 80 2034-05-16T13:51Z r Here the Moon sets, then rises 30 minutes later. So now I'm trying to figure out how to discover arbitrarily brief intervals like this. I want the time increments to scale intelligently so that we don't waste time during long periods of inactivity (body above or below the horizon continuously), but without missing examples like the one above.
51 lines
6.4 KiB
HTML
51 lines
6.4 KiB
HTML
o , o , Astronomical Applications Dept.
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Location: E135 00, N85 00 Rise and Set for the Moon for 2026 U. S. Naval Observatory
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Washington, DC 20392-5420
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Universal Time
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Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec.
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Day Rise Set Rise Set Rise Set Rise Set Rise Set Rise Set Rise Set Rise Set Rise Set Rise Set Rise Set Rise Set
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h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m h m
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01 **** **** **** **** **** **** 1230 1513 ---- ---- ---- ---- ---- ---- 1622 2000 **** **** **** **** **** **** **** ****
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02 **** **** **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ---- 1151 **** **** **** **** **** **** 1755 0431
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03 **** **** **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ---- 0659 0418 **** **** **** **** **** **** 0043
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04 **** **** **** **** 0922 0003 ---- ---- ---- ---- ---- ---- ---- ---- **** **** **** **** **** **** 1408 0948 ---- ----
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04 2023
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05 **** **** 1439 0005 ---- ---- ---- ---- ---- ---- ---- ---- 1620 **** **** **** **** **** **** 2255 0526 ---- ----
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05 1959 2358
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06 **** **** ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1240 0019 **** **** **** **** **** **** ---- ---- ---- ----
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07 **** **** ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- **** **** **** **** **** **** **** **** ---- ---- ---- ----
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08 1227 0358 ---- ---- ---- ---- ---- ---- ---- ---- 1655 **** **** **** **** **** **** 1833 0948 ---- ---- ---- ----
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09 0021 ---- ---- ---- ---- ---- ---- ---- ---- 1314 0418 **** **** **** **** **** **** 0606 ---- ---- ---- ----
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10 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- **** **** **** **** **** **** **** **** ---- ---- ---- ---- ---- ----
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11 ---- ---- ---- ---- ---- ---- ---- ---- 2233 **** **** **** **** **** **** 2328 0959 ---- ---- ---- ---- ---- ----
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12 ---- ---- ---- ---- ---- ---- ---- ---- 1723 0040 **** **** **** **** **** **** 0558 ---- ---- ---- ---- ---- ----
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13 ---- ---- ---- ---- ---- ---- ---- ---- 1202 1007 **** **** **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ----
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14 ---- ---- ---- ---- ---- ---- 2117 **** **** **** **** **** **** 2116 1401 ---- ---- ---- ---- ---- ---- ---- ----
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15 ---- ---- ---- ---- ---- ---- 1726 0651 **** **** **** **** **** **** 1005 ---- ---- ---- ---- ---- ---- ---- ----
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16 ---- ---- ---- ---- ---- ---- **** **** **** **** **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ---- 0717 1052
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17 ---- ---- ---- ---- ---- ---- **** **** **** **** **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ---- 0255 1830
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17 2237
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18 ---- ---- ---- ---- 2111 **** **** **** **** **** **** 1348 ---- ---- ---- ---- ---- ---- ---- ---- **** ****
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19 ---- ---- 0114 0951 1608 1309 **** **** **** **** **** **** 0232 1000 ---- ---- ---- ---- ---- ---- 0659 1544 **** ****
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19 2123
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20 ---- ---- **** **** **** **** **** **** **** **** 2350 1820 ---- ---- ---- ---- ---- ---- ---- ---- 0325 **** ****
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21 ---- ---- **** **** **** **** **** **** **** **** 1415 ---- ---- ---- ---- ---- ---- ---- ---- **** **** **** ****
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22 ---- ---- **** **** **** **** **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- **** **** **** ****
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23 0137 1408 **** **** **** **** **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ---- 0709 2054 **** **** **** ****
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23 2145
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24 **** **** **** **** **** **** **** **** 1831 ---- ---- ---- ---- ---- ---- ---- ---- 0308 **** **** **** ****
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25 **** **** **** **** **** **** **** **** 0402 1501 ---- ---- ---- ---- ---- ---- 1108 1841 **** **** **** **** **** ****
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26 **** **** **** **** **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ---- 0720 **** **** **** **** **** ****
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27 **** **** **** **** **** **** 1919 ---- ---- ---- ---- ---- ---- ---- ---- **** **** **** **** **** **** **** ****
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28 **** **** **** **** **** **** 0743 1542 ---- ---- ---- ---- ---- ---- ---- ---- **** **** **** **** **** **** **** ****
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29 **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ---- 1113 2326 **** **** **** **** **** **** 1349 0355
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30 **** **** **** **** ---- ---- ---- ---- ---- ---- ---- ---- 0729 **** **** **** **** **** **** 0015
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31 **** **** 0413 0037 ---- ---- ---- ---- **** **** **** **** ---- ----
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31 2002
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Note: Blank spaces in the table indicate that a rising or a setting did not occur during that 24 hr interval.
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(**** object continuously above horizon) (---- object continuously below horizon)
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Add one hour for daylight time, if and when in use. |