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comparison service/environment/twilight.py @ 71:5c9927555df6

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twilight computation for rules to use Ignore-this: c40016acb3c3f957cb17d2b918698c77
author drewp@bigasterisk.com
date Wed, 10 Apr 2013 21:32:21 -0700
parents
children a93fbf0d0daa
comparison
equal deleted inserted replaced
70:acb00897f54a 71:5c9927555df6
1 from datetime import time, timedelta, datetime
2 from dateutil.tz import tzlocal, tzutc
3
4 """
5 data from http://aa.usno.navy.mil/data/docs/RS_OneYear.php (2013, san francisco)
6 which I found via http://www.perceptiveautomation.com/userforum/viewtopic.php?t=8627&p=54621
7 """
8 _src = """
9 Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec.
10 Day Begin End Begin End Begin End Begin End Begin End Begin End Begin End Begin End Begin End Begin End Begin End Begin End
11 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
12 01 0656 1731 0646 1801 0614 1830 0528 1859 0445 1929 0419 1957 0421 2007 0445 1947 0513 1905 0539 1818 0608 1738 0638 1720
13 02 0656 1732 0645 1803 0613 1831 0527 1900 0444 1930 0418 1958 0421 2006 0445 1946 0514 1904 0540 1817 0609 1737 0639 1720
14 03 0656 1733 0644 1804 0612 1832 0525 1901 0443 1931 0418 1958 0422 2006 0446 1945 0515 1902 0541 1815 0610 1736 0640 1720
15 04 0656 1734 0643 1805 0610 1833 0524 1902 0442 1932 0418 1959 0422 2006 0447 1944 0516 1901 0542 1814 0611 1735 0640 1720
16 05 0656 1735 0642 1806 0609 1834 0522 1903 0441 1933 0417 2000 0423 2006 0448 1943 0517 1859 0543 1812 0612 1734 0641 1720
17 06 0656 1735 0641 1807 0607 1835 0520 1904 0440 1934 0417 2000 0423 2005 0449 1941 0518 1857 0544 1811 0613 1733 0642 1720
18 07 0656 1736 0641 1808 0606 1836 0519 1905 0438 1935 0417 2001 0424 2005 0450 1940 0519 1856 0545 1810 0614 1732 0643 1720
19 08 0656 1737 0640 1809 0605 1837 0517 1906 0437 1936 0417 2001 0425 2005 0451 1939 0519 1854 0546 1808 0615 1731 0644 1720
20 09 0656 1738 0639 1810 0603 1838 0516 1907 0436 1937 0416 2002 0425 2004 0452 1938 0520 1853 0547 1807 0616 1731 0644 1720
21 10 0656 1739 0638 1811 0602 1839 0514 1908 0435 1938 0416 2003 0426 2004 0453 1936 0521 1851 0547 1805 0617 1730 0645 1720
22 11 0656 1740 0637 1812 0600 1840 0513 1909 0434 1939 0416 2003 0427 2004 0454 1935 0522 1850 0548 1804 0618 1729 0646 1720
23 12 0656 1741 0635 1813 0559 1841 0511 1910 0433 1940 0416 2003 0427 2003 0455 1934 0523 1848 0549 1802 0619 1728 0647 1721
24 13 0656 1742 0634 1814 0557 1842 0510 1911 0432 1941 0416 2004 0428 2003 0456 1933 0524 1846 0550 1801 0620 1728 0647 1721
25 14 0655 1743 0633 1815 0556 1843 0509 1912 0431 1942 0416 2004 0429 2002 0457 1931 0525 1845 0551 1800 0621 1727 0648 1721
26 15 0655 1744 0632 1816 0554 1844 0507 1913 0430 1943 0416 2005 0430 2001 0458 1930 0526 1843 0552 1758 0622 1726 0649 1721
27 16 0655 1745 0631 1817 0553 1844 0506 1914 0429 1944 0416 2005 0431 2001 0459 1929 0526 1842 0553 1757 0623 1726 0649 1722
28 17 0655 1746 0630 1818 0551 1845 0504 1915 0428 1944 0416 2005 0431 2000 0500 1927 0527 1840 0554 1756 0624 1725 0650 1722
29 18 0654 1747 0629 1819 0550 1846 0503 1916 0428 1945 0416 2006 0432 1959 0500 1926 0528 1839 0555 1754 0625 1724 0651 1723
30 19 0654 1748 0627 1820 0548 1847 0501 1917 0427 1946 0416 2006 0433 1959 0501 1924 0529 1837 0556 1753 0626 1724 0651 1723
31 20 0653 1749 0626 1821 0547 1848 0500 1918 0426 1947 0417 2006 0434 1958 0502 1923 0530 1835 0557 1752 0627 1723 0652 1724
32 21 0653 1750 0625 1822 0545 1849 0459 1919 0425 1948 0417 2006 0435 1957 0503 1922 0531 1834 0558 1750 0628 1723 0652 1724
33 22 0652 1751 0624 1823 0544 1850 0457 1920 0424 1949 0417 2007 0436 1956 0504 1920 0532 1832 0559 1749 0629 1722 0653 1725
34 23 0652 1752 0622 1824 0542 1851 0456 1921 0424 1950 0417 2007 0436 1956 0505 1919 0532 1831 0600 1748 0630 1722 0653 1725
35 24 0651 1753 0621 1825 0540 1852 0454 1922 0423 1951 0418 2007 0437 1955 0506 1917 0533 1829 0600 1747 0631 1722 0654 1726
36 25 0651 1754 0620 1826 0539 1853 0453 1923 0422 1952 0418 2007 0438 1954 0507 1916 0534 1828 0601 1746 0632 1721 0654 1726
37 26 0650 1755 0619 1827 0537 1854 0452 1924 0422 1952 0418 2007 0439 1953 0508 1914 0535 1826 0602 1744 0633 1721 0654 1727
38 27 0649 1756 0617 1828 0536 1855 0450 1925 0421 1953 0419 2007 0440 1952 0509 1913 0536 1825 0603 1743 0634 1721 0655 1728
39 28 0649 1757 0616 1829 0534 1856 0449 1926 0421 1954 0419 2007 0441 1951 0510 1911 0537 1823 0604 1742 0635 1721 0655 1728
40 29 0648 1758 x x 0533 1857 0448 1927 0420 1955 0420 2007 0442 1950 0511 1910 0538 1821 0605 1741 0636 1720 0655 1729
41 30 0647 1759 x x 0531 1858 0447 1928 0420 1955 0420 2007 0443 1949 0511 1908 0539 1820 0606 1740 0637 1720 0656 1730
42 31 0647 1800 x x 0530 1859 x x 0419 1956 x x 0444 1948 0512 1907 x x 0607 1739 x x 0656 1730
43 """
44
45 _data = {} # mm-dd : (morningtime, eveningtime)
46 for row in _src.splitlines()[4:]:
47 words = row.split()
48 day = words[0]
49 for month, t1, t2 in zip(range(1,13), words[1::2], words[2::2]):
50 if t1 == 'x':
51 continue
52 _data["%02d-%s" % (month, day)] = time(int(t1[:2]), int(t1[2:])), time(int(t2[:2]), int(t2[2:]))
53
54 def isWithinTwilight(t):
55 """is the datetime within the civil twilight for san francisco"""
56 standardTime = t.astimezone(tzutc()) + timedelta(seconds=-8 * 3600)
57 t1, t2 = _data["%02d-%02d" % (standardTime.month, standardTime.day)]
58 return not (t1 < standardTime.time() < t2)
59
60 if __name__ == '__main__':
61 print isWithinTwilight(datetime.now(tzlocal()))
62