“And Yaakob blessed Joseph’s sons ‘on that day.”
What significance is it that the blessings that Yaakov extended to his grandchildren occurred on that day, isn’t it obvious that they happened then?
Yaakab’s intentions may also be understood a little bit differently to mean, he blessed them
“with” that day. Yaakov gave them a blessing that they live their lives on that particular day in which they find themselves, unencumbered by the burdens of the past, and without assuming futile worries about those future events which are not subject to change at the present.
This is indeed a blessing. If we would only channel our energies towards doing that which can be productive, instead of squandering them in trying to make yesterday better, or worrying about possible eventualities which we can do nothing about, how much happier would we be.