Python modules for accessing East Asia calendars (Sexagenary cycle, Solar term, etc.)
Project description
EastAsiaCalendars provides an eacal Python module for accessing East Asia calendar systems, originated in China, and spread to Korea, Vietnam, and Japan. This module includes the following.
solar terms (節氣, 节气, 節気, 절기, tiết khí)
sexagenary cycle (六十花甲, 干支, 간지, Gānzhī)
zassetsu (雑節, Seasonal days in the Japanese calendar)
Solar terms are calculated based on the planetary motion computed by PyEphem. The accuracy of solar terms may be within one minute.
Results of use of this software is not warrantied. You may use, modify, and redistribute this software under GNU LESSER GENERAL PUBLIC LICENSE Version 3.
Requirements
Installation
The required packages (PyEphem, pytz, and jdcal) are automatically installed via pip.
pip install eacal
Example & Usage
This package supports Chinese (traditional / simplified), Japanese, Korean, Vietnamese, and English (translation). Any timezones can be specified using the pytz package.
Calculating solar terms in a year
The solar terms of 2015 for English (in UTC).
>>> import eacal
>>> from datetime import datetime
>>> c = eacal.EACal()
>>> for x in c.get_annual_solar_terms(2015):
... print "%2d %-25s %s" % (x[1], x[0], datetime.strftime(x[2], "%Y-%m-%d %H:%M %Z"))
22 minor cold 2015-01-05 16:20 UTC
23 major cold 2015-01-20 09:43 UTC
0 start of spring 2015-02-04 03:58 UTC
1 rain water 2015-02-18 23:49 UTC
2 awakening of insects 2015-03-05 21:55 UTC
3 vernal equinox 2015-03-20 22:45 UTC
...
20 major snow 2015-12-07 10:53 UTC
21 winter solstice 2015-12-22 04:47 UTC
The solar terms of 2015, for Traditional Chinese (in Hong Kong Time), Simplified Chinese (in Chinese Standard Time), Japanese (in Japan Standard Time), Korean (in Korea Standard Time), and Vietnamese (in Indochina Time).
>>> import eacal
>>> from datetime import datetime
>>> c_t = eacal.EACal(zh_t=True)
>>> for x in c_t.get_annual_solar_terms(2015):
... print "%2d %s %s" % (x[1], x[0], datetime.strftime(x[2], "%Y-%m-%d %H:%M %Z"))
22 小寒 2015-01-06 00:20 HKT
23 大寒 2015-01-20 17:43 HKT
0 立春 2015-02-04 11:58 HKT
1 雨水 2015-02-19 07:49 HKT
2 驚蟄 2015-03-06 05:55 HKT
3 春分 2015-03-21 06:45 HKT
...
20 大雪 2015-12-07 18:53 HKT
21 冬至 2015-12-22 12:47 HKT
>>> c_s = eacal.EACal(zh_s=True)
>>> for x in c_s.get_annual_solar_terms(2015):
... print "%2d %s %s" % (x[1], x[0], datetime.strftime(x[2], "%Y-%m-%d %H:%M %Z"))
22 小寒 2015-01-06 00:20 CST
23 大寒 2015-01-20 17:43 CST
0 立春 2015-02-04 11:58 CST
1 雨水 2015-02-19 07:49 CST
2 惊蛰 2015-03-06 05:55 CST
3 春分 2015-03-21 06:45 CST
小寒 2015-01-06 00:20 CST
大寒 2015-01-20 17:43 CST
立春 2015-02-04 11:58 CST
雨水 2015-02-19 07:49 CST
惊蛰 2015-03-06 05:55 CST
春分 2015-03-21 06:45 CST
...
20 大雪 2015-12-07 18:53 CST
21 冬至 2015-12-22 12:47 CST
>>> c_j = eacal.EACal(ja=True)
>>> for x in c_j.get_annual_solar_terms(2015):
... print "%2d %s %s" % (x[1], x[0], datetime.strftime(x[2], "%Y-%m-%d %H:%M %Z"))
22 小寒 2015-01-06 01:20 JST
23 大寒 2015-01-20 18:43 JST
0 立春 2015-02-04 12:58 JST
1 雨水 2015-02-19 08:49 JST
2 啓蟄 2015-03-06 06:55 JST
3 春分 2015-03-21 07:45 JST
...
20 大雪 2015-12-07 19:53 JST
21 冬至 2015-12-22 13:47 JST
>>> c_k = eacal.EACal(ko=True)
>>> for x in c_k.get_annual_solar_terms(2015):
... print "%2d %s %s" % (x[1], x[0], datetime.strftime(x[2], "%Y-%m-%d %H:%M %Z"))
22 소한 2015-01-06 01:20 KST
23 대한 2015-01-20 18:43 KST
0 입춘 2015-02-04 12:58 KST
1 우수 2015-02-19 08:49 KST
2 경칩 2015-03-06 06:55 KST
3 춘분 2015-03-21 07:45 KST
...
20 대설 2015-12-07 19:53 KST
21 동지 2015-12-22 13:47 KST
>>> c_v = eacal.EACal(vi=True)
>>> for x in c_v.get_annual_solar_terms(2015):
... print "%2d %-12s %s" % (x[1], x[0], datetime.strftime(x[2], "%Y-%m-%d %H:%M %Z"))
22 Tiểu hàn 2015-01-05 23:20 ICT
23 Đại hàn 2015-01-20 16:43 ICT
0 Lập xuân 2015-02-04 10:58 ICT
1 Vũ thủy 2015-02-19 06:49 ICT
2 Kinh trập 2015-03-06 04:55 ICT
3 Xuân phân 2015-03-21 05:45 ICT
...
20 Đại tuyết 2015-12-07 17:53 ICT
21 Đông chí 2015-12-22 11:47 ICT
The solar terms of 2015 in North American Eastern Time Zone.
>>> import eacal
>>> import pytz
>>> from datetime import datetime
>>> c = eacal.EACal(tz=pytz.timezone('America/New_York'))
>>> for x in c.get_annual_solar_terms(2015):
... print "%2d %-25s %s" % (x[1], x[0], datetime.strftime(x[2], "%Y-%m-%d %H:%M %Z"))
22 minor cold 2015-01-05 11:20 EST
23 major cold 2015-01-20 04:43 EST
0 start of spring 2015-02-03 22:58 EST
1 rain water 2015-02-18 18:49 EST
2 awakening of insects 2015-03-05 16:55 EST
3 vernal equinox 2015-03-20 18:45 EDT # in DST
...
20 major snow 2015-12-07 05:53 EST
21 winter solstice 2015-12-21 23:47 EST
Calculating sexagenary cycles
Calculating the cyclic year of 2015.
>>> import eacal
>>> print(eacal.EACal().get_cycle_year(2015))
wood-yin goat # 乙未
>>> print(eacal.EACal(zh_t=True).get_cycle_year(2015))
乙未
>>> print(eacal.EACal(vi=True).get_cycle_year(2015))
ất mùi # 乙未
>>> print(eacal.EACal().get_cycle_year(2015, id=True))
31 # 31=wood-yin goat
Calculating the Cyclic month of May 2015.
>>> import eacal
>>> print(eacal.EACal().get_cycle_month(2015, 5))
metal-yin snake # 辛巳
>>> print(eacal.EACal(ja=True).get_cycle_month(2015, 5))
辛巳
>>> print(eacal.EACal(ko=True).get_cycle_month(2015, 5))
신사 # 辛巳
>>> print(eacal.EACal().get_cycle_month(2015, 5, id=True))
17 # 17=metal-yin snake
Calculating the Cyclic day of 10th, May 2015.
>>> import eacal
>>> from datetime import datetime
>>> print(eacal.EACal().get_cycle_day(datetime(2015, 5, 10)))
fire-yang dog # 丙戌
>>> print(eacal.EACal(zh_s=True).get_cycle_day(datetime(2015, 5, 10)))
丙戌
>>> print(eacal.EACal(vi=True).get_cycle_day(datetime(2015, 5, 10)))
bính tuất # 丙戌
>>> print(eacal.EACal().get_cycle_day(datetime(2015, 5, 10), id=True))
22 # 22=fire-yang dog
Calculating the Cyclic year, month, and day around the start of spring in 2015.
>>> import eacal
>>> from datetime import datetime
>>> c = eacal.EACal() # for English, in UTC
>>> print('|'.join(c.get_cycle_ymd(datetime(2015, 2, 3))))
wood-yang horse|fire-yin ox|metal-yang dog # 甲午年 丁丑月 庚戌日
>>> print('|'.join(c.get_cycle_ymd(datetime(2015, 2, 4))))
wood-yin goat|earth-yang tiger|metal-yin pig # 乙未年 戊寅月 辛亥日 (cyclic year and cyclic month incremented at the start of spring)
>>> print('|'.join(c.get_cycle_ymd(datetime(2015, 2, 5))))
wood-yin goat|earth-yang tiger|water-yang rat # 乙未年 戊寅月 壬子日
>>> print(c.get_cycle_ymd(datetime(2015, 2, 3), id=True))
(30, 13, 46) # 30=wood-yang horse, 13=fire-yin ox, 46=metal-yang dog
>>> print(c.get_cycle_ymd(datetime(2015, 2, 4), id=True))
(31, 14, 47) # 31=wood-yin goat, 14=earth-yang tiger, 47=metal-yin pig
>>> print(c.get_cycle_ymd(datetime(2015, 2, 5), id=True))
(31, 14, 48) # 48=water-yang rat
Calculating Zassetsu
>>> import eacal
>>> import pytz
>>> from datetime import datetime, timedelta
>>> c = eacal.EACal(tz=pytz.timezone('Asia/Tokyo')) # for English, in Japan Standard Time
>>> for x in c.get_annual_jp_seasonal_days(2015):
... if len(x) == 4:
... print("%3d %s %s %s" % (x[1], datetime.strftime(x[2], "%Y-%m-%d"), datetime.strftime(x[3]-timedelta(days=1), "%Y-%m-%d"), x[0]))
... else:
... print("%3d %s %s" % (x[1], datetime.strftime(x[2], "%Y-%m-%d"), x[0]))
1 2015-01-17 2015-02-03 doyō:winter
2 2015-04-17 2015-05-05 doyō:spring
3 2015-07-20 2015-08-07 doyō:summer
4 2015-10-21 2015-11-07 doyō:autumn
11 2015-03-18 2015-03-24 higan:spring
12 2015-09-20 2015-09-26 higan:autumn
101 2015-02-03 setsubun:the day before the start of spring
102 2015-05-02 hachijū-hachi-ya:the 88th night after the start of spring
103 2015-09-01 nihyaku-tōka:the 210th day after the start of spring
111 2015-06-11 nyūbai:the beginning of rainy season
112 2015-07-02 hangeshō:the end of field work
>>> c_j = eacal.EACal(ja=True) # for Japanese, in Japan Standard Time
>>> for x in c_j.get_annual_jp_seasonal_days(2015):
... if len(x) == 4:
... print("%3d %s %s %s" % (x[1], datetime.strftime(x[2], "%Y-%m-%d"), datetime.strftime(x[3]-timedelta(days=1), "%Y-%m-%d"), x[0]))
... else:
... print("%3d %s %s" % (x[1], datetime.strftime(x[2], "%Y-%m-%d"), x[0]))
1 2015-01-17 2015-02-03 土用:冬
2 2015-04-17 2015-05-05 土用:春
3 2015-07-20 2015-08-07 土用:夏
4 2015-10-21 2015-11-07 土用:秋
11 2015-03-18 2015-03-24 彼岸:春
12 2015-09-20 2015-09-26 彼岸:秋
101 2015-02-03 節分
102 2015-05-02 八十八夜
103 2015-09-01 二百十日
111 2015-06-11 入梅
112 2015-07-02 半夏生
History
Version 0.0.3 (2015-05-17)
Add an “id” option to get_cycle_year(), get_cycle_month(), and get_cycle_day()
this option enabled the methods to return IDs (0-59) of the sexagenary cycle.
Refine implementations of solar_term_finder()
Renumber IDs of solar terms
begins at “start of spring” (0=start of spring - 23=major cold)
Version 0.0.2 (2015-05-13)
Fixed documents (README.md, README_ja.md)
Add install_requires to setup.py
required packages PyEphem, pytz, and jdcal are automatically installed via pip
Fixed a earthly branch in English
Version 0.0.1 (2015-05-12)
The first release.
TODO
a method for finding days which have a specified sexagenary cycle
lunisolar calendars
regnal years
adapt to Chinese cycle years
write unit tests
documentation for Windows environments
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