Comments on: Calculate sunrise and sunset with PyEphem

By: C. Poynter

C. Poynter — Tue, 14 Jul 2009 23:44:04 +0000

I am trying to run this in Python 2.5. I only get a result for the last day of the year (end_date). How do I get a full years result and have it written to a text file, plus add 10 hours for Australian timezone.

By: ryan

ryan — Sun, 27 Apr 2008 19:16:49 +0000

Xaviar:
Good call. After updating my PyEphem version to the most recent one, I got a warning that the rise_time and set_time attributes are now deprecated, and next_rising and next_setting should be used instead. I’ve updated the post to reflect that change, just like you’ve shown.

By: Xaviar

Xaviar — Sun, 27 Apr 2008 18:45:35 +0000

Thanks for posting this. I needed something similar to this exact information. You could have used the next feature to step through the dates though. for example:

import ephem
import datetime

obs = ephem.Observer()
obs.lat = ’38.8′
obs.long=’-75.2′

start_date = datetime.datetime(2008,1,1)
end_date = datetime.datetime(2008, 12, 31)
length = (end_date – start_date).days
rise_times = []
set_times = []
count = 0
while count < length:
rise_times.append(obs.next_rising(ephem.Sun()))
set_times.append(obs.next_setting(ephem.Sun()))
count += 1