The Etz Chaim Bulletin has:
According to Chabad.org, it is the middle number here:
|Tzeit Hakochovim (nightfall)|
And according to MyZmanim:
at 3:57 AM Dawn - Degrees
or at 4:27 AM Dawn - Fixed Minutes
Eating of a settled character - אכילת קבע - may not be started
during the half hour immediately preceding dawn. Please
consult your Rabbi for details.
(The time given for Rabbi Tukaccinsky is typically 3 minutes more than the Chabad time, for the following reason they give:
* 3 minutes have been added to compensate for the fact that the שקיעה times (for ירושלים) printed in ר' טוקצינסקי-'s luach, are 2 to 3 minutes later than the times for "sea level שקיעה". Definitions provided by other Poskim may also be subject to a similar translating.
I wonder whether the 9:05 given by the Etz Chaim bulletin is similarly a 3 minute shift to R' Moshe Feinstein's zman.
Now, I have given three times. Which one do we hold like? More importantly, which one do you hold like? Ask your parents, or your local Orthodox rabbi, to see how you hold in general.
What can I add? Oh, yes. Here is what gives me mild discomfort about the fast of the 17th of Tammuz, in particular. To cite Wikipedia regarding the Sumerian deity Tammuz -- the name of the month, Chazal tell us, was adopted by the Jews on their return from Bavel:
Mourning for Tammuz is a cult practice, and one that even extended to the Jews, until the time of Churban Bayis Rishon. Yes, we have our own reason for fasting, but no explicit mention of a reason is given in Tanach. Rather, in Zecharia 8:19, it is referred to as 'the fast of the fourth month', and the gemara fills in the rest of the details.
In Babylonia, the month Tammuz was established in honor of the eponymous god Tammuz, who originated as a Sumerian shepherd-god, Dumuzid or Dumuzi, the consort of Inanna and, in his Akkadian form, the parallel consort of Ishtar. The Levantine Adonis ("lord"), who was drawn into the Greek pantheon, was considered by Joseph Campbell among others to be another counterpart of Tammuz, son and consort. The Aramaic name "Tammuz" seems to have been derived from the Akkadian form Tammuzi, based on early Sumerian Damu-zid.The later standard Sumerian form, Dumu-zid, in turn became Dumuzi in Akkadian.Beginning with the summer solstice came a time of mourning in the Ancient Near East, as in the Aegean: the Babylonians marked the decline in daylight hours and the onset of killing summer heat and drought with a six-day "funeral" for the god. Recent discoveries reconfirm him as an annual life-death-rebirth deity: tablets discovered in 1963 show that Dumuzi was in fact consigned to the Underworld himself, in order to secure Inanna's release, though the recovered final line reveals that he is to revive for six months of each year (see below).In cult practice, the dead Tammuz was widely mourned in the Ancient Near East. Locations associated in antiquity with the site of his death include both Harran and Byblos, among others. A Sumerian tablet from Nippur (Ni 4486) reads:
- She can make the lament for you, my Dumuzid, the lament for you, the lament, the lamentation, reach the desert — she can make it reach the house Arali; she can make it reach Bad-tibira; she can make it reach Dul-šuba; she can make it reach the shepherding country, the sheepfold of Dumuzid
- "O Dumuzid of the fair-spoken mouth, of the ever kind eyes," she sobs tearfully, "O you of the fair-spoken mouth, of the ever kind eyes," she sobs tearfully. "Lad, husband, lord, sweet as the date, [...] O Dumuzid!" she sobs, she sobs tearfully.These mourning ceremonies were observed even at the very door of the Temple in Jerusalem to the horror of the Israelite prophet Ezekiel, whose Biblical prophecy expresses Yahweh's anger at His people's apostate worship of idols:
- "Then he brought me to the door of the gate of the Lord's house which was toward the north; and, behold, there sat women weeping for Tammuz. Then said he unto to me, 'Hast thou seen this, O son of man? turn thee yet again, and thou shalt see greater abominations than these." —Ezekiel 8:14-15Ezekiel's testimony is the only direct mention of Tammuz in the Hebrew Bible.
Update: I'll add to this post some halachos of the fast, from the 5th Avenue Synagogue: