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https://stackoverflow.com/questions/238684/subtract-n-hours-from-a-datetime-in-ruby
If you are working in Rails, the following super-intutive possibility exists: > Time.now - 12.hours=> 2019-08-19 05:50:43 +0200. (This also works with seconds, minutes, days, and years) if you're using just Ruby, DateTimecan't do this, but Timecan: t = Time.nowt = t - …
https://exceptionshub.com/subtract-n-hours-from-a-datetime-in-ruby.html
1.0 = one day. 1.0/24 = 1 hour. 1.0/ (24*60) = 1 minute. 1.0/ (24*60*60) = 1 second. Questions: Answers: If I’m allowed to use Time instead of DateTime (There are several ways to translate one to another ): # Just remove the number of seconds from the Time object Time.now - (6 * 60 * 60) # 6 hours ago. Questions:
https://newbedev.com/subtract-n-hours-from-a-datetime-in-ruby
hours = 10 minutes = 5 seconds = 64 hours = DateTime.now - (hours/24.0) #<DateTime: 2015-03-11T07:27:17+02:00 ((2457093j,19637s,608393383n),+7200s,2299161j)> minutes = DateTime.now - (minutes/1440.0) #<DateTime: 2015-03-11T17:22:17+02:00 ((2457093j,55337s,614303598n),+7200s,2299161j)> seconds = DateTime.now - …
https://www.rubyguides.com/2015/12/ruby-time/
If you want the time zone offset you can use the utc_offset method. The output for this method is in seconds, but you can divide by 3600 to get it in hours. Example: t = Time.now t.zone # "CET" t.utc_offset / 3600 # 1 You can also get the current time in UTC: Time.now.utc Ruby Time Formatting. Ruby formats Time objects in a specific way by default.
https://blog.udemy.com/ruby-datetime/
You can ask Ruby to retrieve current system date and time and print it for you: #!/usr/bin/ruby -w time = Time.new puts "Current Time : " + time.inspect. This gives the following output: Current Time: Tue Dec 24 7:50:00 -0700 2013. Explanation: Here we have declared “time” as an object of the “Time.new” class which is already defined in the system. We are asking Ruby to display the …
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