1

In English I can say :

2 d 3 h 2 m 20 s (= 2 days 3 hours 2 minutes 20 seconds)

What would be the abbreviations in Italian for day, hour, minute, second?

2
  • 2
    as far as I know the abbreviation for "days" is "gg." for the other ones you can use the same letters (h, m, s), also min. and sec. are used for minutes and seconds) May 13 '18 at 21:12
  • Seconds should be s in all languages.
    – Charo
    May 14 '18 at 9:21
3

I can say it could depend on the context you are talking about.

In everyday language, as pointed out in @RiccardoDeContardi comment, you can use giorno/i for day/days with an abbreviation like g./gg. and h (ore) , m or min. for minutes, and finally s or sec. for seconds.

In this blog post about La punteggiatura nel tempo (The use of punctuation in time) it is explained how it is used, for instance, in physics:

In fisica si misurano gli intervalli di tempo in giorni, ore, minuti secondi. Si usano le seguenti abbreviazioni: d (dies) per giorno, h (hora) per ora, m per minuti e s per secondi.

In physics we measure time intervals in days, hours, and seconds. We use the following abbreviations: d (dies, the latin form), h (hora) for hours, m for minutes and s for seconds.

Ovviamente si tratta di una notazione non molto adatta alla vita quotidiana: "Per favore quanto durerà il volo?" "2 h 10 m Signore". Molto più semplice rispondere "2 ore e 10".

Obviously this isn't a very suitable notation for everyday life: "How long will the fly be?" "2 h and 10 m, Sir". It's easier to reply "2 hours and 10"

Note that for the for the International System of Units the basic unit for time is the second (s) and other units of time may be defined as a multiple of the second. Obviously minutes ad hours are accepted and used due to their widespread use among non academic people.

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    I'm a physicist and I wouldn't say that "for the International System of Units the only accepted unit for time is the second". The point is that second is defined as the basic unit of time by the International System of Units so that other units of time may be defined and expressed in terms of second.
    – Charo
    May 14 '18 at 9:44
  • For accepted I meant that only seconds are officially part of the International System. However I modified the answer to consider your point of view as a physicist in order to clarify my answer
    – abarisone
    May 14 '18 at 9:52
  • In fisica si misurano gli intervalli di tempo in giorni, ore, minuti secondi. Si usano le seguenti abbreviazioni: d (dies) per giorno, h (hora) per ora, m per minuti e s per secondi. This means I can just write 3 d 5 h 6 m 7 s?
    – Tony
    May 15 '18 at 1:57
  • It depends on the context. You can write d for days if you're writing something related to a technical context, in everyday life you would use g./gg. for day/days.
    – abarisone
    May 15 '18 at 6:08

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