07-25-2008
How to calculate specific hours between 2 dates
Hi there,
I am trying to find out a way to calculate how many hours are between 2 dates but from a specific time range, actually working hours (Monday to Friday 09:00 - 18:00).
What I mean is for example
date1 = Monday 21 July 2008 22:00:00 so in python 2008-07-21 22:00:00
date2 = Wednesday 23 July 2008 12:00:00 so in python 2008-07-23 12:00:00
and I want to find a way to say
date2 - date1 = 12 hours
Always the date2 is in working hours.
Anybody has an idea how to do this? Actually I don't care about the programming language I just want to find the best logic to do this and then I will write it in python
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LEAVE(1) BSD General Commands Manual LEAVE(1)
NAME
leave -- remind you when you have to leave
SYNOPSIS
leave [[+]hhmm]
DESCRIPTION
leave waits until the specified time (within the next 12 hours), then reminds you that you have to leave by writing to the TTY that you exe-
cuted leave on.
You are reminded 5 minutes and 1 minute before the actual time, at the time, and every minute thereafter. When you log off, leave exits just
before it would have printed the next message.
OPTIONS
hhmm The time of day is in the form hhmm where hh is a time in hours (on a 12 or 24 hour clock), and mm are minutes.
However, all times are converted to a 12 hour clock, and assumed to be in the next 12 hours. An attempt to set an alarm for farther
into the future will be truncated to within the next 12 hours.
+ If the time is preceded by '+', the alarm will go off in hours and minutes from the current time.
If no argument is given, leave prompts with "When do you have to leave?" A reply of newline causes leave to exit, otherwise the reply is
assumed to be a time. This form is suitable for inclusion in a ~/.login or ~/.profile.
SEE ALSO
calendar(1), csh(1), sh(1)
HISTORY
The leave command appeared in 3.0BSD.
BUGS
In the modern age with X(1) and window multiplexing programs like window(1) and screen(1), the leave command's reminders and admonitions
might not be seen if the user has the window where leave was started minimized or obscured.
This all begs for a more general user notifications system to be implemented.
BSD
January 19, 2002 BSD