I am using
planetEphemeris(juliandate(y, m, d), 'Sun', 'Mars')
to extract the position of Mars relative to Sun at a given date
Now, I need to add a specific number of days to that date and extract the position of the new date. Apparently,
planetEphemeris(juliandate(y, m, d) + n, 'Sun', 'Mars')
does not work. What do I need to add instead of n to have the position of Mars in, say, 100 days after that date?
Thank you in advance.