The two cows with the number 7 on the forehead one is a Red cow represents seven years of famine. The black cow represents seven years of plenty. Looks like there's two years delay according to the book of Jasher before the 7 years of plenty and 7 years of famine starts.

Red cow was born on Thursday, September 25, 2014 Tishrei 1, 5775. The black cow was born on Elul 25 2014.

From their birth in 2014 plus two years delay comes to Elul 25 2016 then adding seven years of plenty ends on Elul 25, 2023 and the Red cow representing seven years of famine starts on Tishri 1 2023???? Revolution of the year could be Tishri 1?

Book of Jasher, Chapter 50

7 And at the revolution of the year, in the second year of Joseph's reigning over Egypt, the Lord gave great plenty throughout the land for seven years as Joseph had spoken, for the Lord blessed all the produce of the earth in those days for seven years, and they ate and were greatly satisfied.