It marks the first breech of the walls of Jerusalem by the Romans in 70 CE, leading to the violent siege of the city, and its eventual destruction. Today also begins the three week period leading up to Tisha B’Av, the day both Temples were destroyed along with many other tragic events within Jewish history.
The 17th of Tammuz is commemorated with a half-day fast (from sun-up to sundown). However, there are no other prohibitions.
The next “Three Weeks” are a period of mourning. Many observant Jews will refrain from participating in celebrations, especially weddings. And there are many Jews who will also refrain from shaving, cutting their hair, and will observe other mourning customs.
An interesting note regarding the Minor Fast Days is that there is some debate within halakhah as to the observance of these days. An equal argument can be made both for and against fasting on this day (17th of Tammuz). Interestingly, according to many halachic authorities, either choice is actually following “the letter of the law” since there are differing opinions.
The central issue is whether or not we are living in a time where “there is no persecution but not yet peace.” This discussion is exemplified from the following Talmudic text:
“Rav Papa replied: What it means is this: When there is peace they [the minor fast days] shall be for joy and gladness; if there is persecution, they shall be fast days; if there is no persecution but not yet peace, then those who desire may fast and those who desire need not fast.” (b. Rosh HaShanah 18b)
By “persecution (sh’mad)” the Sages understand this to mean “universal persecution of the Jewish people.” And “not yet peace” refers to the ultimate peace that will come in the Messianic Age. So, many authorities believe we are currently in this in-between stage – there is not universal persecution of the Jewish people and not yet complete peace on earth. As such, Rav Papa’s position seems to be a valid possibility. As such, halachic figures, like Rabbi David Golinkin and others, have ruled that minor fast days (like today) may be rendered optional.
However, all authorities are in agreement that this machlochet (halachic disagreement) does NOT extend to major fast days, like Tisha B’Av or Yom Kippur. These major fast days are still obligated upon all Jews, unless they are exempt for medical reasons (and as always, minor children are always exempt).
Whether one chooses to fast today or not, what is important is to keep in mind the tragic history of our people. Although there has been an increase in anti-Semitism in recent years, we are still not “universally persecuted.” Many of us live in complete freedom without having to worry on a daily basis about pogroms, being lynched, or barred from a local country club. But we are also not yet living in complete peace.
As such, on days like today, we must still identify with the sufferings of our past, while at the same time long for the days of Mashiach.
May that day come speedily and soon!