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