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Mayan calendar: Difference between revisions
Python 3.6 code for mayan calendar solving task
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2020-03-01 5 Manik' 15 K'ayab 13.0.7.5.7 G8
2071-05-16 1 Ok 18 Sip 13.2.19.4.10 G9
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=={{header|Python}}==
{{works with|Python|3.6}}
<lang python>
import datetime
def g2m(date, gtm_correlation=True):
"""
Translates Gregorian date into Mayan date, see
https://rosettacode.org/wiki/Mayan_calendar
Input arguments:
date: string date in ISO-8601 format: YYYY-MM-DD
gtm_correlation: GTM correlation to apply if True, Astronomical correlation otherwise (optional, True by default)
Output arguments:
long_date: Mayan date in Long Count system as string
round_date: Mayan date in Calendar Round system as string
"""
# define some parameters and names
correlation = 584283 if gtm_correlation else 584285
long_count_days = [144000, 7200, 360, 20, 1]
tzolkin_months = ['Imix’', 'Ik’', 'Ak’bal', 'K’an', 'Chikchan', 'Kimi', 'Manik’', 'Lamat', 'Muluk', 'Ok', 'Chuwen',
'Eb', 'Ben', 'Hix', 'Men', 'K’ib’', 'Kaban', 'Etz’nab’', 'Kawak', 'Ajaw'] # tzolk'in
haad_months = ['Pop', 'Wo’', 'Sip', 'Sotz’', 'Sek', 'Xul', 'Yaxk’in', 'Mol', 'Ch’en', 'Yax', 'Sak’', 'Keh', 'Mak',
'K’ank’in', 'Muwan', 'Pax', 'K’ayab', 'Kumk’u', 'Wayeb’'] # haab'
gregorian_days = datetime.datetime.strptime(date, '%Y-%m-%d').toordinal()
julian_days = gregorian_days + 1721425
# 1. calculate long count date
long_date = list()
remainder = julian_days - correlation
for days in long_count_days:
result, remainder = divmod(remainder, days)
long_date.append(int(result))
long_date = '.'.join(['{:02d}'.format(d) for d in long_date])
# 2. calculate round calendar date
tzolkin_month = (julian_days + 16) % 20
tzolkin_day = ((julian_days + 5) % 13) + 1
haab_month = int(((julian_days + 65) % 365) / 20)
haab_day = ((julian_days + 65) % 365) % 20
haab_day = haab_day if haab_day else 'Chum'
lord_number = (julian_days - correlation) % 9
lord_number = lord_number if lord_number else 9
round_date = f'{tzolkin_day} {tzolkin_months[tzolkin_month]} {haab_day} {haad_months[haab_month]} G{lord_number}'
return long_date, round_date
if __name__ == '__main__':
dates = ['2004-06-19', '2012-12-18', '2012-12-21', '2019-01-19', '2019-03-27', '2020-02-29', '2020-03-01']
for date in dates:
long, round = g2m(date)
print(date, long, round)
</lang>
{{out}}
<pre>
2004-06-19 12.19.11.06.13 4 Ben 16 Sotz’ G7
2012-12-18 12.19.19.17.17 1 Kaban Chum K’ank’in G6
2012-12-21 13.00.00.00.00 4 Ajaw 3 K’ank’in G9
2019-01-19 13.00.06.03.00 1 Ajaw 13 Muwan G6
2019-03-27 13.00.06.06.07 3 Manik’ Chum Wayeb’ G1
2020-02-29 13.00.07.05.06 4 Kimi 14 K’ayab G7
2020-03-01 13.00.07.05.07 5 Manik’ 15 K’ayab G8
</pre>
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