Solar Calculator
Arduino library to support calculation of sunrise / sunset times
See SystemClock NTP for example usage.
This is straight port of the code used by https://www.esrl.noaa.gov/gmd/grad/solcalc/
Javascript reference: https://www.esrl.noaa.gov/gmd/grad/solcalc/main.js
API Documentation
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class SolarCalculator
Calculation of apparent time of sunrise and sunset.
Note: Months are 1-based
Unnamed Group
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int sunRiseSet(bool isRise, int y, int m, int d)
a sunrise or sunset figure for a given day.
- Parameters
isRise – true for sunrise, false for sunset
y – Absolute year
m – Month number (1 - 12)
d – Day of month (1 - 31)
- Returns
int – Minutes since midnight, -1 if there is no sunrise/sunset
Public Functions
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inline SolarCalculator()
Default constructor, uses Royal Observatory, Greenwich as default.
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int sunRiseSet(bool isRise, int y, int m, int d)
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struct SolarRef
A location is required to compute solar times.
References
Used by
SystemClock NTP Sample
SoC support
esp32
esp32c3
esp32s2
esp32s3
esp8266
host
rp2040