Returns DST rules for a financial center.
rulesFinCenter(FinCenter = "")
a character with the the location of the financial center named as "continent/city".
rulesFinCenter, lists the daylight saving rules
for a selected financial center.
There is no dependency on the POSIX implementation of your operating system because all time zone and day light saving time information is stored locally in ASCII files.
returns a list of time zones and DST rules available in the database.
## rulesFinCenter - rulesFinCenter("Zurich")