Want only the working hours(9am-5pm) between two dates


#1

want only the working hours(9am-5pm) between two dates, weekends should
be omitted…

i did this code…

require ‘time’
require ‘date’
class Date
def calc(date1,date2)

d1=Time.parse(date1).strftime('%d').to_i
m1=Time.parse(date1).strftime('%m').to_i
y1=Time.parse(date1).strftime('%Y').to_i
t1=Time.parse(date1).strftime('%H').to_i
min1=Time.parse(date1).strftime('%M').to_i

date1 = Date.new( y1, m1, d1 )

d2=Time.parse(date2).strftime('%d').to_i
m2=Time.parse(date2).strftime('%m').to_i
y2=Time.parse(date2).strftime('%Y').to_i
t2=Time.parse(date2).strftime('%H').to_i

date2 = Date.new( y2, m2, d2 )
weekdays = (date1..date2).reject { |d| [0,6].include? d.wday }
w= weekdays.length
working_hours=w*8
puts "working hours = #{working_hours}"

end
end

d=Date.new
d.calc(“November 5th, 2008, 10:30 am”,“November 7th, 2008, 6:00 pm”)

i have calculated the total working hours…
but i need the total hours between 9am-5pm, between the given dates…
can any one plz help??
thanks.,

Regards,
Srikanth J


#2

Srikanth J. wrote:

but i need the total hours between 9am-5pm, between the given dates…
can any one plz help??

Not sure what you mean. Do you mean (date2 - date1 + 1) * 8 ?

Use to_i on the answer if you don’t want Rational arithmetic.


#3

Brian C. wrote:

Srikanth J. wrote:

but i need the total hours between 9am-5pm, between the given dates…
can any one plz help??

Not sure what you mean. Do you mean (date2 - date1 + 1) * 8 ?

Use to_i on the answer if you don’t want Rational arithmetic.

hi brain,

i mean…

date1=“November 5th, 2008, 10:30 am”
date2=“November 7th, 2008, 6:00 pm”

i want only the working hours between 10:30 am to 6.00 pm,in these
dates…

date can also be,

date1=“March 5th, 2005, 5:30 am”
date2=“November 7th, 2006, 9:00 pm”

all i need is working hours between these dates…

first day & last days time makes complications here.


#4

Srikanth J. removed_email_address@domain.invalid writes:

want only the working hours(9am-5pm) between two dates, weekends should
be omitted…

i did this code…
but i need the total hours between 9am-5pm, between the given dates…
can any one plz help??

There’s 8 hours between 9am-5pm, so 8 hour/working day.
There’s 5 working day/week.

So if you can compute the number of weeks between the Monday following
the first date, and the Monday preceding the last date, you can easily
compute the number of working hours.

if week-of(start) = week-of(end) then
working-hours = working-hours/working-day * working-days(from start
to end)
else
working-hours = working-hours/working-day * ( working-days(from start
to end-of-week-after(start))
+ working-days(from
beginning-of-week-before(end) to end)
+
working-days/working-weeks * working-weeks(from end-of-week-after(start)
to
beginning-of-week-before(end)))
end


#5

Srikanth J. removed_email_address@domain.invalid writes:

date1=“March 5th, 2005, 5:30 am”
date2=“November 7th, 2006, 9:00 pm”

all i need is working hours between these dates…

first day & last days time makes complications here.

If you have partial days, apply the same principle than in my previous
answer, trim off the partial days, compute the trimmed off hours, and
multiply the days by the working-hours-per-day.

if day(start)=day(end) then
min(5pm,hour(end)) - max(9am,hour(start))
else
(min(5pm,hour(end)) - 9am)

  • (5pm - max(9am,hour(start)))
  • previous algo with (start + 1day) and (end - 1 day)
    end

#6

On Dec 10, 8:32 am, Srikanth J. removed_email_address@domain.invalid wrote:

date1=“March 5th, 2005, 5:30 am”
date2=“November 7th, 2006, 9:00 pm”

all i need is working hours between these dates…

first day & last days time makes complications here.

Posted viahttp://www.ruby-forum.com/.

You could try this beauty of a gem.

http://runt.rubyforge.org/

http://runt.rubyforge.org/doc/files/doc/tutorial_te_rdoc.html