Get sunrise and sunset times by day, latitude, and longitude

Usage

get_sunrise_sunset(
  chosen_date,
  latitude = NULL,
  longitude = NULL,
  survey = NULL,
  station = NULL,
  verbose = FALSE,
  timezone = "US/Alaska"
)

Arguments

chosen_date: Date or charater. Formatted as "YYYY-MM-DD"
latitude: Numeric. Fill in only if survey and station are not entered. latitude in either decimal degrees or a character latitude in degrees and decimal minutes
longitude: Numeric. Fill in only if survey and station are not entered. Longitude in either decimal degrees or a character longitude in degrees and decimal minutes
survey: Character. Fill in only if latitude and longitude are not entered. A character string of the survey you are interested in reivewing. Options are those from public_data$survey, which are "AI", "GOA", "EBS", "NBS", "BSS".
station: Character. Fill in only if latitude and longitude are not entered. A character string of the current station name (as a grid cell; e.g., "264-85"). Stations defined in the station_coords dataset.
verbose: Logical. Default = FALSE. If you would like a readout of what the file looks like in the console, set to TRUE.
timezone: Character. Default = "US/Alaska." Other options include: "US/Aleutian"

Value

Time of sunrise and sunset in text. Also shows a pop-up with sunrise and sunset times.

Examples

# Find times based on lat/lon for today's date, where date is a date object
get_sunrise_sunset(chosen_date = Sys.Date(),
                   latitude = 63.3,
                   longitude = -170.5)
#> Using latitude and longitude to calcualte sunrise and sunset. 
#> Sunrise is at 2025-05-21 05:57:00 AKDT
#> Sunset is at 2025-05-21 00:39:00 AKDT

# Find times based on lat/lon for today's date, where date is a character
# and lat/lon in degree decimal-minutes
get_sunrise_sunset(chosen_date = "2023-06-05",
                   latitude = "63 18.0",
                   longitude = "-170 30.0")
#> Using latitude and longitude to calcualte sunrise and sunset. 
#> Sunrise is at 2023-06-05 05:19:00 AKDT
#> Sunset is at 2023-06-05 01:13:00 AKDT

# Find times based on a survey (AI) station's recorded lat/lon for today's date
get_sunrise_sunset(chosen_date = "2025-06-10",
                   survey = "AI",
                   station = "8-55")
#> Using survey station (AI 8-55) centroid location information (lat = 53.371, lon = 170.561) to calculate sunrise and sunset. 
#> Sunrise is at 2025-06-10 08:10:00 AKDT
#> Sunset is at 2025-06-10 01:04:00 AKDT

# Find times based on a survey (GOA) station's recorded lat/lon for today's date
get_sunrise_sunset(chosen_date = Sys.Date(),
                   survey = "GOA",
                   station = "264-18-511")
#> Using survey station (GOA 264-18-511) centroid location information (lat = 52.352, lon = -169.971) to calculate sunrise and sunset. 
#> Sunrise is at 2025-05-21 07:15:00 AKDT
#> Sunset is at 2025-05-20 23:17:00 AKDT

# Find times based on a survey (EBS) station's recorded lat/lon for today's date
get_sunrise_sunset(chosen_date = "2025-08-04",
                   survey = "EBS",
                   station = "P-31")
#> Using survey station (EBS P-31) centroid location information (lat = 60, lon = -177.356) to calculate sunrise and sunset. 
#> Sunrise is at 2025-08-04 07:38:00 AKDT
#> Sunset is at 2025-08-04 00:12:00 AKDT

# Find times based on a survey (NBS) station's recorded lat/lon for today's date
get_sunrise_sunset(chosen_date = "2025-06-04",
                   survey = "NBS",
                   station = "ZZ-01")
#> Using survey station (NBS ZZ-01) centroid location information (lat = 63.334, lon = -168.244) to calculate sunrise and sunset. 
#> Sunrise is at 2025-06-04 05:14:00 AKDT
#> Sunset is at 2025-06-04 01:08:00 AKDT