How to get UTC timestamp in Ruby

Question

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You could use  Time now to i

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The default formatting is not very useful  in my opinion   I prefer ISO8601 as it s sortable  relatively compact and widely recognized    gt  gt  require  time    gt  true  gt  gt  Time now utc iso8601   gt   2011-07-28T23 14 04Z

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if you need a human-readable timestamp  like rails migration has  ex   20190527141340   Time now utc to formatted s  number     using Rails  Time now utc strftime   Y m d H M S     using Ruby

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time   Time zone now    It will work as  irb gt  Time zone now   gt  2017-12-02 12 06 41 UTC

User · Answer

The proper way is to do a Time now getutc to i to get the proper timestamp amount as simply displaying the integer need not always be same as the utc timestamp due to time zone differences

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Usually timestamp has no timezone     irb  gt  Time now to i    Time now getutc to i   gt  true

User · Answer

What good is a timestamp with its granularity given in seconds  I find it much more practical working with Time now to f  Heck  you may even throw a to s sub         to get rid of the decimal point  or perform a typecast like this  Integer 1e6 Time now to f

User · Answer

Time utc 2010  05  17

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time   Time now getutc   Rationale  In my eyes a timestamp is exactly that  A point in time  This can be accurately represented with an object  If you need anything else  a scalar value  e g  seconds since the Unix epoch  100-ns intervals since 1601 or maybe a string for display purposes or storing the timestamp in a database  you can readily get that from the object  But that depends very much on your intended use   Saying that   a true timestamp is the number of seconds since the Unix epoch   is a little missing the point  as that is one way of representing a point in time  but it also needs additional information to even know that you re dealing with a time and not a number  A Time object solves this problem nicely by representing a point in time and also being explicit about what it is

[ruby] How to get UTC timestamp in Ruby?

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