I apologize ahead for this long ranty post, and thank you for bearing with me
by spending your precious time.
It is unfortunate for Nepal that joda-time does not already have support for
Vikram Samvat let alone any other hindu calendar system. But then it may be the
case that Nepal perhaps needs to adopt a more algorithmically straightforward
calendar system for official purposes.
All this maybe out of the scope of the initiative :( ?
I have been desperately researching on how I can perhaps add support and I have
found some promising leads(at the moment these are way over my head) that might
lead to an answer:
* Calendrical Calculations
(Provides Common Lisp Code for Saka Samvat)
* Astronomical Algorithms
* Indian Calendrical Calculations
(Common Lisp, same authors as #1)
There are also a bunch of github repositories on the subject with different
(https://github.com/espinielli/pycalcal) - Python Port of "Calendrical
Calculations" Common Lisp Code. has Saka Samvat calculations.
(https://github.com/kbwood/calendars) - jQuery - has Nepali Calendar based on
data of precalculated dates (I'd say that's a inelegant but practical hack that
may pontentially bite the users in the *** like Y2K). This approach is what has
been used in local software, perhaps even in proprietary Government(Tax,
Internal Revenue) software.
Note: My preliminary knowledge indicates that Saka Samvat is similar to Vikram
Samvat with maybe only few differences. Vikram Samvat is more usually spelled
as Bikram Sambat(BS) in Nepal.
My thinking is that it may suffice to have application/UI level support for
Bikram Sambat. What I mean by that is that we keep the storage and manipulation
of dates in AD as it is. Date/Time is stored as Unix Time isn't it anyway? We
display and do all UI level manipulation in BS based on Calendar code we derive
from above resources. Actually there exists in github, a Java and an AngularJS
library too for jQuery lib above(#3 - hack) kind of approach .
There might only be a need to do a little bit of architectural change required
in the core in the definition of months and fiscal year. If definition of month
and fiscal year could be customized(if it is not already customizable - I know
fiscal year is customizable), that maybe all we need, besides the UI widgets.
If that is the case then Aliens in another galaxy could theoretically use
I am also thinking of joining or igniting a movement for government to base
official work be done in terms of AD like most of the world does including our
neighbor India. As far as I have gone in finding the solution to perceived
problem, I still do not know the government's actual position on AD usage so
I'll be doing that soon first. It certainly is the case though that doing
official work in BS makes things easier with government in Nepal.
September 20, 2016 4:03 PM, "Ed Cable" wrote:
The Fineract developer is the right place so thanks for starting this
discussion. Keith Woodlock, are you able to respond more about the calendar
library that was chosen - it think it was Joda right? It looks like that only
supports 8 calendars - http://www.joda.org/joda-time/cal.html
(http://www.joda.org/joda-time/cal.html) - but Vikram Samvat isn't one of them.
On Mon, Sep 19, 2016 at 8:54 PM, Yalu wrote:
Dear Dev Community,
This is my first post to this list and I apologize if the content of this
message is not appropriate.
I am from Nepal and here the official Calendar System in widespread use is
still exclusively a Hindu calendar system called Vikram Samvat. I am trying to
get Mifos to be usable in Nepal and this is one of the major hurdle that is
I am trying to determine what kind of Calendar Date/Time architecture/module
Mifos X has so as to localize this aspect of the software faithfully and
seamlessly; Whether the module is pluggable so that we could just plug in
Vikram Samvat based calendar system(if it exists) or any other Calendar system,
and we would be good to go.
Determining or making the architecture pluggable and having a slot to
accommodate different kinds of Calendar/Date/Time system may only be one of a
few related problems in this problem set. On the other side, I am not even sure
if Nepal has a reliable computational Calendar library to plugin for Vikram
I know there exists an approach that some local developers have been using to
address Calendar solutions for Vikram Samvat. From what I know these systems
are made not with pure algorithmic approach(thus scalable into the future) but
by using pre-calculated data set of dates. These set of dates range between
arbitrary(?) past and future dates. The authority that publishes the pre
calculated dates and the legitimacy of their calculations may also be
questionable. I have done some research on this and I will share more of my
I would really appreciate any help localizing Mifos X in this manner. It would
be a huge win for Nepali adoption of Mifos X. I will assist in any ways I can,
so please ask questions, share your insights and discuss.
Thank You immensely for all your hard work. You all are all simply amazing.
Director of Community Programs, Mifos Initiative
edca...@mifos.org (mailto:edca...@mifos.org) | Skype: edcable | Mobile:
Collectively Creating a World of 3 Billion Maries | http://mifos.org