Calendar convertion, from UT or JD to Hebrew

[Guba 1]

Hello to the community.

I'm looking for a component or a code library which is capable to convert from UT date to Hebrew calendar date.
I've found something in Javascript but I'm not familiar with that language.

Thanks for any help.

 

 

[Anders Melander 1784]

You could roll your own: https://en.wikibooks.org/wiki/Computer_Programming/Hebrew_calendar

 

Here's some code but I have no idea about what language that is: http://www.chelm.org/jewish/calendar/algorithms.html

[Guba 1]

Thank you, but chelm seems not working, while the wikibooks page contains something that is quite not usable.
All these explanations without any example are completely useless.

But thanks however.

 

 

[Vandrovnik 214]

What about https://stevemorse.org/hebrewcalendar/hebrewcalendar.htm ?

[Anders Melander 1784]

Here's a C implementation: https://github.com/yparitcher/libzmanim

The code looks well written.

[limelect 48]

Will my free library/component will help you?

https://limelect.com/downloads/hebrew-holydays-delphi-components/

 

I also used it with D10

 

If you need my help drop an Email

Edited November 23, 2021 by limelect

[limelect 48]

This is an Hebrew calendar with my component

[Fr0sT.Brutal 900]

Damn, I thought old British money system is the most crazy mess I saw.

[Guba 1]

On 11/22/2021 at 7:59 AM, Vandrovnik said:

What about https://stevemorse.org/hebrewcalendar/hebrewcalendar.htm ?

Again, exceptions explanations, but useless unless you take one week understanding the text and writing the code.
Thanks however.

 

[Guba 1]

22 hours ago, limelect said:

Will my free library/component will help you?

https://limelect.com/downloads/hebrew-holydays-delphi-components/

 

I also used it with D10

 

If you need my help drop an Email

THANKS A LOT, but I have to know if is there any procedure to convert a gregorian date (our common dates) to hebrew date and vice-versa.

Or, better, to convert any julian date to hebrew date and vice-versa.

Thanks for your reply.

 

 

 

 

 

 

[Guba 1]

22 hours ago, limelect said:

This is an Hebrew calendar with my component

Your calendar is SPLENDID. My compliments.

[Guba 1]

7 hours ago, Fr0sT.Brutal said:

Damn, I thought old British money system is the most crazy mess I saw.

Really, Pal, you have no idea about that....

[mvanrijnen 123]

nice stuff to execise on creating unittests 🙂

 

[Fr0sT.Brutal 900]

1 hour ago, Guba said:

I have to know if is there any procedure to convert a gregorian date (our common dates) to hebrew date and vice-versa

Won't ICU help you then? I think they have literally everything for internationalization

[Vandrovnik 214]

3 hours ago, Guba said:

Again, exceptions explanations, but useless unless you take one week understanding the text and writing the code.
Thanks however.

 

There is a link to his homepage and there he has https://stevemorse.org/jcal/jcal.html

If you display source code of the page, there are javascript routines, may be it is enough to rewrite them to Delphi?

[Guba 1]

4 hours ago, Fr0sT.Brutal said:

Won't ICU help you then? I think they have literally everything for internationalization

ICU? I don't know this body.
Could you post a link to them? Google says a lot of useless infos....

[Guba 1]

2 hours ago, Vandrovnik said:

There is a link to his homepage and there he has https://stevemorse.org/jcal/jcal.html

If you display source code of the page, there are javascript routines, may be it is enough to rewrite them to Delphi?

Yep. I think this could be the only way. I have downloaded the two files which contain the code.
The problem is that I'm not familiar with some javascript "amenities".
To be really honest, I hate javascript as hemorrhoids.
But at least there is the calculator to use for testing the unit to be developed.
 

[Fr0sT.Brutal 900]

11 hours ago, Guba said:

ICU? I don't know this body.
Could you post a link to them? Google says a lot of useless infos....

https://unicode-org.github.io/icu/userguide/datetime/calendar/

 

Quote

 

ICU has other Calendar subclasses to support non-gregorian calendars including:

    Buddhist

    Chinese

    Coptic

    Ethiopic

    Hebrew

    Indian

    Islamic

    Japanese

    Persian

 

 

Edited November 25, 2021 by Fr0sT.Brutal

[Guba 1]

15 hours ago, Fr0sT.Brutal said:

https://unicode-org.github.io/icu/userguide/datetime/calendar/

 

 

well, first of all a BIG thank you for the indication.

Second, unfortunately it is a library written in C++ or something, and it makes me shake my knees to just only "think" to deploy such code to one of my users.

It is a piece of code that I don't control, and there is only one other thing that I hate more than this.
Third you know what? there is not a single example with the Hebrew calendar, while there is one for Japanese. However I will study this solution for a while, but I think I will try the stevemorse.org solutions, notwithstanding, as I said, I hate javascript.
However THANKS a lot for the infos.
Be well.

[Fr0sT.Brutal 900]

6 hours ago, Guba said:

Second, unfortunately it is a library written in C++ or something, and it makes me shake my knees to just only "think" to deploy such code to one of my users.

It is a piece of code that I don't control, and there is only one other thing that I hate more than this.

This lib in fact became industry standard and is used by numerous apps - Node, Chrome, Firebird... It's even included in W10: https://docs.microsoft.com/en-us/windows/win32/intl/international-components-for-unicode--icu-

I guess when you do encrypted network connections you don't implement your own TLS engine but use OpenSSL for this or something alike? The same with ICU.

Anyway it's all up to you 😉

 

[limelect 48]

On 11/24/2021 at 5:13 PM, Guba said:

THANKS A LOT, but I have to know if is there any procedure to convert a gregorian date (our common dates) to hebrew date and vice-versa.

Or, better, to convert any julian date to hebrew date and vice-versa.

Thanks for your reply.

 

 

 

 

 

 

I made this component years ago so I cannot help

By the way, independence day is not there it is only religious days