March 11, 2009 7:58 pm at 7:58 pm #589591aussieboyParticipant
What exactly is it? (When is it?)
I know that it has something to do with the sun and the creation of the world but i have heard about 5 diffrent explanations about what exactly it is. If someone can help clarify this for me it would be much appreciated.
Thank you:)March 11, 2009 8:19 pm at 8:19 pm #641263areivimzehlazehParticipant
when: April 8, on a Wednesday (it’s always this date & this day because the english calendar goes according to the sun)
there are dozens of s’forim out, even a small english one called “Once every 28 Years”March 11, 2009 8:22 pm at 8:22 pm #641264kapustaParticipant
there was something in hamodia (I think) a few weeks ago 🙂March 11, 2009 8:40 pm at 8:40 pm #641265
A solar year is approximately 365.25 days, so every fourth year the fraction will add up to an extra day (which is why we have leap years). Therefore in the beginning of the fifth year the sun will be in the same location as it was in the beginning of the first year.
(Let’s assume that the beginning of the first year was exactly at sunrise, the beginning of the second year will be at midday, the beginning of the third year will be at sunset, the beginning of the fourth year will be at midnight and the beginning of the fifth year will be at sunrise…)
Since there are 7 days in a week and the LCM of 4 and 7 is 28, it will take 28 years until the sun is in the exact same place in the sky on the same day of the week at the beginning of the year.
After 2100 Birchas Hachama will no longer be on April 8th (it will still be on a Wednesday though (the first one being April 9th, 2121)) because 2100 is not a leap year as far as the Gregorian Calendar is concerned but is according to Halacha. (From 1800 to 1900 it was always on April 7th.)March 11, 2009 8:58 pm at 8:58 pm #641266aussieboyParticipant
Thanks everybody 🙂March 12, 2009 4:51 pm at 4:51 pm #641268ZachKessinMember
It stays a constant date on the Julian calendar, because both make the same assumption that the year is 365.25 days long, its not exactly. The civil calendar assumes that the year is 365 97/400 days long, which is still not exactly right but close enough to only drift 1 day in about 3200 years.March 12, 2009 5:15 pm at 5:15 pm #641269March 12, 2009 5:32 pm at 5:32 pm #641270
That’s correct, on the Julian Calendar the date is constant (April 5th), but the vast majority of the world switched to the Gregorian Calendar in 1582.March 12, 2009 5:54 pm at 5:54 pm #641271tzippiMember
I just saw an ad in a local flyer for community gatherings for davening and birchas hachama. Goosebumps and tears!March 15, 2009 8:47 am at 8:47 am #641273ZachKessinMember
Dr Pepper, I know that, I’m a bit of an astronomy geek, and with that comes a fair bit of calendar knowledge. The catholic countries switched in 1582, England (and the Americas) not till 1750 something. Russia not until like 1905.March 15, 2009 10:35 am at 10:35 am #641274shindyMember
I was at the kotel for the last Bircas Hachama, I will never forget it.March 15, 2009 11:13 am at 11:13 am #641275
Once the Julian Calendar was dropped the date for Birchas Hachama was no longer constant. (It is constant from 1900 – 2100 but will be on April 9th begining 2100 as April 8th 2121 will be a Tuesday.)March 15, 2009 7:01 pm at 7:01 pm #641276squeakParticipant
Why is Bircas Hachama in Nissan, if we say “Hayom Haras Olam” on Rosh Hashana, which was only 3 days later?March 15, 2009 8:56 pm at 8:56 pm #641280AnonymousInactive
Does anyone know what time birchas hacham falls out on that wednesday?March 15, 2009 8:57 pm at 8:57 pm #641281YW Moderator-39Member
probably different times depending where you areMarch 15, 2009 9:50 pm at 9:50 pm #641283YW Moderator-72Participant
according to myZmanim the time of Hanetz Hachama where I live is 6:27:40March 15, 2009 9:55 pm at 9:55 pm #641284moish01Member
that wasn’t smart. just figured out where you live, 72. even though i already knew.
Everybody that has been in the CR for awhile knows where I live – it is no big deal. stop over and say hello… oh and bring me a coffee (no sugar/2% milk) when you do. :o) YW Moderator-72March 19, 2009 1:29 am at 1:29 am #641286m2mMember
I watched the birchas hachama presentation oorah put out on their shmorg disc and it really gave me a good understanding of what birchas hachama is and how the whole solar system works, in a very well done graphical presentation with excellent narration. It is worth to take the time to watch so you can get a full appreciation of this mitzvah.
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