Suntime

Calculate sunrises and sunsets. In an arguably messy way. Also doesn't support midnight sun (days without sunset) or polar night (days without sunrise).

Adapted from NOAA's solar calculations spreadsheets, found here:

https://www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html

Use

Use it as a module. Suntime.py consists of three classes, where Sun is the main one.

# date is a datetime object
# location is a Location object
# timezone is a TimeZone object, defaults to UTC
Sun (date, location, timezone)

# N, E are latitude and longitude, positive towards north and east
Location (name, N, E)

# hours, minutes, seconds ahead of UTC
# minutes, seconds defaults to 0
Timezone (name, hours, minutes, seconds)

The Sun object will have the properties sunrise, sunset, and noon, which all will be datetime objects.

Example

import datetime
import suntime

# Datetime of today
today = datetime.datetime.now()

# Location
rome = suntime.Location("Rome", 41.89, 12.48)

# Time zone
CET = suntime.TimeZone("CET", 1)

sun = suntime.Sun(today, rome, CET)

print(sun.sunrise)
print(sun.noon)
print(sun.sunset)

print("Day lenght:", sun.sunset - sun.sunrise)

taco-c/suntime

Suntime

Use

Example