Interesting, I wasn't sure how to run it, as well as not having the local tide database for here. There's a whole rabbit hole on the tidal databases. Seems they were public domain but no more and my government is worried about commercial use
I am curious about the local tides, I'm perhaps 30 miles upstream from the ocean and the railroad bridge in town is considered the end of tidal waters.
I'll have to read up on the time zone support and whether x:\sys\apps\timeset\tz_en.lst that is installed by AOS is good enough. Seems it should be taken care off by the operating system and ideally installed in %ETC%
Then there is the rabbit hole of when the time zones change. Here the Province passed a law to switch to DST when ever you guys get around to it.