Yes — Almanachs (or, as here, Almanacks) are incredibly interesting little books. I linked to an Australian series a couple months back in the “Additions” thread. Here is the 1785 edition of the one advertized:
https://dl.tufts.edu/concern/pdfs/jq085x707
I consult quite extensively Trinidad newspapers and the local almanack is regularly advertized, but I found only the 1827 one online so far — and more recent ones from the 1890s and later that are not really much useful to me. There are also “almanach-like” so-called “blue books” from the 1860s-1880s which are basically the same as almanachs.
But yes: these were full of info, including moon cycles and tides, weights and measurements, currencies, etc. Here is one page of the conversion tables in the 1827 almanach for Trinidad:
There are several pages of this, so that if you had your almanach with you, you could always convert sterling into currency for any amount, and vice versa. There were also usually conversion tables for other major currencies, especially Spanish American, American, and French.
EDIT — Here's another one:
https://archive.org/details/2574036R.nlm.nih.gov/mode/2up
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