Re: Who writes this stuff?

From: remove_Bill_Wyatt_this (REMOVEwyattTHIS_at_cfa.harvard.edu)
Date: 11/22/04 

Date: Mon, 22 Nov 2004 09:12:47 -0500

Michael Mcneil wrote:
> http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=16687
>
> "From mid-August to mid-October the Moon rises at almost the same time
> every evening in the northern mid-latitudes. The bright disk of Luna
> provides enough dependable light at this time of year to allow longer
> days for harvesting crops."
>
> In order to provide what we call lunar phases the moon drops back 90
> degrees in about a week. Take this example from July 15th to 23rd in
> 2001:

So, they talk about mid August to mid-October, so you try to refute them
using July 15-23???

The blurb is correct, although vague about what they mean by 'almost the
same time'. Here's a list of sunset and moonrise times from this autumn
(source: www.almanac.com/rise, times are EDT PM for 42.5 N, 71.2 W) for
a week centered around the day before full moon:

Date Sunset MoonRise Delta
Sep 24 6:38 5:08 -90
Sep 25 6:37 5:39 -62
Sep 26 6:35 6:04 -31
Sep 27 6:33 6:26 -07
Sep 28 6:31 6:47 +16 Full Moon
Sep 29 6:30 7:08 +38
Sep 30 6:28 7:30 +62

and the same for the previous spring:
Apr 30 7:45 2:54 +291
May 1 7:46 4:05 +221
May 2 7:47 5:19 +148
May 3 7:48 6:36 +72
May 4 7:49 7:56 +07 Full Moon
May 5 7:50 9:19 +89
May 6 7:51 10:40 +171

The 'delta' time is time in minutes from sunset to moonrise. See a
difference? 

-- 
Bill Wyatt (REMOVEwyattTHIS@cfa.harvard.edu) "remove this" for email
    Smithsonian Astrophysical Observatory  (Cambridge, MA, USA)

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