How to add 1 day to a Posix in 0.19

I am upgrading from 0.18 to 0.19.

I previously had code like
add Day -1 from

now that from is a Posix, how do I replicate that functionality?

Something like this will add 24 hours

    |> Time.posixToMillis
    |> (+) (24 * hour)
    |> Time.millisToPosix

hour =
1000 * 60 * 60

But this doesn’t account for any daylight savings time changes, which might not be what you want.

I’ve been using the Time.Extra package by Justin Mimbs which works with Posix in 0.19:


posix |> add Day -1 Time.utc

Thanks - are you happy with that package?

Yes, I’m happy with it; I haven’t come across any issues thus far - but I’m not doing anything particularly strenuous either (I’m not dealing with multiple time-zones).

The author is active and also has a package for time-zones (justinmimbs/timezone-data) with the in-built IANA time-zone database. He also has a date-extra package for 0.18.

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