[R] Package to generate moon phase - SR-SS

Neotropical bat risk assessments and acoustic tools neotrop|c@|@b@t@ @end|ng |rom gm@||@com
Sun Mar 7 14:03:20 CET 2021

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

Bruce W. Miller, PhD.
Neotropical bat risk and acoustic assessments
Conservation Fellow - Wildlife Conservation Society
Research Associate, American Museum of Natural History

If we lose the bats, we may lose much of the tropical vegetation and the lungs of the planet

Using acoustic sampling to identify and map species distributions
and pioneering acoustic tools for ecology and conservation of bats for >25 years.

Key projects include providing free interactive identification keys and call fact sheets for the vocal signatures of New World Bats

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