Casio Moon Phase/Tide Graph Model #WS-1300# on this sunny but chilly Monday. You know, I still have no idea if the moon/tide displays are correct. Oh, and one of these days, I will get the new version of this watch.

Have a great and safe week 😎🥶

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If i m not totally wrong the watch gets the correct Moon phase by calculating time zone and time. The tide will be callculated by actual time and moonphase. At least i think so by reading through my 7900 manual. But no guarantee, as it is perfectly possible that i misunderstood my manual (language- barrier)

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I still have the manual for this watch and I have tried to mess with the watch but, it's a bit complicated so I left it like it is.

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Luzifugerofokale

If i m not totally wrong the watch gets the correct Moon phase by calculating time zone and time. The tide will be callculated by actual time and moonphase. At least i think so by reading through my 7900 manual. But no guarantee, as it is perfectly possible that i misunderstood my manual (language- barrier)

I also have a 7900. I would assume this one is similar. You have to put in your longitude, and there is also a website that gives you your lunatidal lag (or something like that) because depending on the coastline, high and low tide may lag the moon position.