Question

I use a function from here to calculate the sunrise and sunset and it returns:

         sunrise           sunset
6.49055593325792 18.2873900837081

I am struggling (trying with strftime, POSIXct or as.Date functions) to convert it to real time, but so far without success.

As always, any suggestion is greatly appreciated.

Answer 1

@Arun’s strategy works, but it might be easier to just do:

x <- c(6.49055593325792, 18.2873900837081)
today<-as.POSIXct('2012-01-23 00:00:00 EST')
today + (3600*x)

# "2012-01-23 06:29:26 EST" "2012-01-23 18:17:14 EST"

That will get you the seconds as well.