G‑d made the two great lights: the greater light to rule the day, and the lesser light to rule the night . . . And it was evening and it was morning, a fourth day.—Genesis 1:16, 19

One who sees the sun at its turning point should say, "Blessed is He who reenacts the works of Creation." And when is this? Abaya said: every 28th year.—Talmud, Tractate Berachot 59b

Every 28 years the sun returns to the same position, at the same time of the week, that it occupied at the time of its creation—at the beginning of the fourth day of creation. A special blessing – called Birkat Hachamah, "the sun blessing" – is recited to mark this event. Due to the rarity of this event, this blessing is customarily recited amid large public gatherings of men, women and children.

This year, we will perform this special mitzvah on the morning of April 8This year, 5769, we will perform this special mitzvah on the morning of April 8 (the morning before Passover).

The blessing is traditionally preceded and followed by a short selection of Psalms and prayers.

The existence of nearly all life on Earth is fueled by light from the sun. Every morning without fail, the sun rises in the east and bathes us with its sustaining rays, causing flora to grow and, through the process of photosynthesis, providing oxygen for all fauna.

Some may call this phenomenon nature.

We will gather on April 8th and declare otherwise:

"Blessed are You, Lord our G‑d, King of the universe, who reenacts the works of creation."