Minha Gedola of Elef Hashishi
Shirat Devorah quotes a commenter on Matzav.com:
According to Chazal, the world is six thousand years, and then one thousand years of Olam Haba. This compares to six days of the week, with the seventh day as Shabbos.770.83 years - assuming the world was created in Tishri - would correspond to Rosh Hodesh Av of this coming year.
Yemos Hamashiach would be the end of the “six days of the week”, or Friday afternoon, as we prepare for Shabbos. Yemos Hamashiach would be Olam Hazeh, yet on a platform very close to Olam Haba. So too, Friday afternoon, it is still weekday, yet we are almost Shabbosdik.
If we were to figure out each year of “Elef HaShishi”, and where it corresponds to the hour of the day on “Friday”, divide 1000 by 24, you get 41.66 This means that every 41.66 years corresponds to one hour on the Seven Day anology.
The sun begins to set one half hour after Chatzos (according to Halacha). So Friday afternoon, one half hour after Chatzos, we are beginning the countdown to Shabbos. One half hour after Chatzos is 18.5 hours after the beginning of Friday (Shkiah Thursday night).
Follow me…….. As we said, every 41.66 years corresponds to one hour. 18.5 hours on Friday corresponds to 770 years in the Elef HaShishi. (18.5 x 41.66 = 770.83) Which means that 5,770 is when we begin “Friday afternoon one half hour after Chatzos”, or the countdown to Olam Haba, or Yemos Hamashiach.
Watch for fast moving events on the world stage in the coming months.
One half-hour after Hatzot is the time for Minha Gedola. The Shulhan Aruch brings down a Mahloket whether the admonition of doing work on Erev Shabbat ("one who does so will not see a סימן ברכה from that work") is from Minha Gedola on or from Minha Ketana on. Even though most Aharonim hold that it's from Minha Ketana on, many great Rishonim and Aharonim (like the טור and the ב"ח) hold that it's from Minha Gedola.
If we apply it to the 6000 years, we can say, perhaps, that the aura of Shabbat is approaching starting from Rosh Hodesh Av, 5770. Therefore, one who thinks that we can still conduct ourselves as "business as usual", will not see a סימן ברכה from such conduct.
גילוי has an interesting take on this whole concept from the Kol HaTor. He says that there is a 24-hour counting and a 12-hour counting. He made a spreadsheet that shows this. According to the spreadsheet's 12-hour counting, Rosh Hodesh Av, 5770 would be smack in the middle of Adam's getting paired with Havah. What this means is open to interpretation, but גילוי says it has to do with the Nesirah that he explains at the end of that post.