Message-ID: <4ad24a9b-cdd6-1675-113b-5066e47a43ed@gmail.com>
Date: 2021-03-07T18:06:58Z
From: Duncan Murdoch
Subject: Package to generate moon phase - SR-SS
In-Reply-To: <C0F7A3B1-945D-4A74-8344-9670E2990A32@dcn.davis.ca.us>
For me too: suncalc is the package.
Duncan Murdoc
On 07/03/2021 10:37 a.m., Jeff Newmiller wrote:
> Odd.. came right up for me. Perhaps you might find rseek.org easier to use?
>
> On March 7, 2021 5:03:20 AM PST, Neotropical bat risk assessments and acoustic tools <neotropical.bats at gmail.com> wrote:
>> Hi all
>>
>> I have not found a package by Googling, but assume there must be at
>> least one out there.
>> I need to generate/write sun rise-sun set times (civil twilight) and
>> moon phase/illumination.
>>
>> I would like to add a start date and end date along with location
>> coordinates and have a table generated like below.
>> This is from a legacy program acquired some 30 years ago and is no
>> longer available.? This can only generate 1 month at a time (subset
>> below).? But for a year at a time both historical and for future dates
>> and locations.
>>
>> For this legacy program I enter the date and select a location I have
>> in
>> a simple TXT location file location with time-zone and X-Y coordinates
>> and it will generate a month at a time.? this can be dumped to the
>> clipboard but not written as a TXT or delimited file.
>>
>> I am hoping there will be an elegant way to do this in R and have the
>> results written to a file for import into an Access DB.
>> Tnx for any suggestions? on package(s).
>>
>> Sample below.
>>
>> ??????????????????? Sun and Moon Data for March 2021
>> ???????????????????????? 17.05?N? 88.57?W? 5hrW
>> ????????????????????? Standard Time? Civil Twilight
>>
>> ??????????????????????????? Sun???????????????????????? Moon
>> ????? Date??? Twi.? Rise? Transit? Set??? Twi.? Rise? Transit Set??? %
>>
>> ?? 3/1/2021? 06:50? 07:12? 13:07? 19:01? 19:23? 21:36? 02:52? 09:04 92
>> ?? 3/2/2021? 06:50? 07:11? 13:06? 19:01? 19:23? 22:35? 03:43? 09:47 85
>> ?? 3/3/2021? 06:49? 07:11? 13:06? 19:02? 19:23? 23:35? 04:35? 10:31 76
>> ?? 3/4/2021? 06:48? 07:10? 13:06? 19:02? 19:24? *****? 05:28? 11:18 65
>