Description Usage Arguments Value Author(s) References
Calculate the raw lenght of day in hours related to the date
1 | day_length(dates, lon = 11.1, lat = 43.77, timezone = "Europe/Rome")
|
dates |
Date in YMD format |
lon |
numeric Geographical Longitude of site in decimal degrees (negative == West) . Default is 11.10. |
lat |
numeric Geographical Latitude of site in decimal degrees. Default is 43.77. |
timezone |
character Timezone. Default is "Europe/Rome". |
Return sunrise time, suset time,length of day in hours decimal.
Istituto di Biometeorologia Firenze Italy Alfonso crisci a.crisci@ibimet.cnr.it ASL LUCCA Marco Selmi marco.selmi@uslnordovest.toscana.it
Teets, D.A. 2003. Predicting sunrise and sunset times. The College Mathematics Journal 34(4):317-321.
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