I always feel odd publicizing Tisha b'Av rules and schedules far in advance; it seems so antithetical to our hope that Mashiach will come any day now.
Nonetheless, the reality of mailing timetables and people's needs dictates that we send out such information. If the Shulchan Aruch could see fit to include laws of Tisha b'Av, I suppose it's all right for us to do so as well.
With that in mind, here's a reprint from my shul mailing of laws which are unique to this year's calendar, in which Shabbat is Erev Tisha b'Av (For a more complete list of rules, see Aish's page here.) Note that all times are based on Allentown, PA.
Are there any restrictions on, or changes in, Shabbat practices?
-The “Tzidkatcha Tzedek” prayer is not said at Shabbat Minchah.
-One may not declare that he is eating in order to build up strength for fasting, even if that is why he eats; using Shabbat as a preparation-day for the week would be disrespectful.
-One may eat whatever one chooses, but one may neither eat nor drink after sunset on Shabbat afternoon, even though it is still Shabbat. One also may not wash for pleasure after sunset.
-One should not invite infrequent guests over for Seudah Shlishit, and a communal Seudah Shlishit is inappropriate.
-One may bentch with a mezuman at all of the Shabbat meals.
-One may not go for a leisurely stroll on Shabbat afternoon. One may study Torah even if that would give him great enjoyment.
Saturday night practices
-Remove leather shoes, and stop sitting on chairs, after Shabbat.
-At 8:52 PM everyone should say the phrase "Baruch HaMavdil Bein Kodesh L’chol / Blessed is the One who distinguishes between the sacred and the mundane." We then remove our shoes and change into weekday clothes, before Maariv. [In shuls where Maariv is davened immediately after Shabbat, non-leather shoes should be brought before Shabbat begins.]
-One who will have to eat during the fast (other than drinking water) should recite Havdalah before breaking the fast, without the use of spices. One should use grape juice or beer for that
Havdalah, and drink only two to three ounces.
-Although we do not recite Havdalah (other than in the case above), we do recite the blessing over the Havdalah candle before reading Eichah.
-We do not wash the Shabbat dishes by hand on Tishah b’Av. One who will need those dishes Sunday night may wash them after 1:07 PM on Tishah b’Av.
Ending the fast on Sunday night
-One may not eat or drink, even after the fast is over, until after recites/hearing Havdalah. One uses wine or grape juice for Havdalah.
-Havdalah does not involve the introductory “Hineih” paragraph, or the spices or flame. One begins with the blessing over wine/grape juice, and continues with the normal berachah of
If we must fast for Tisha b'Av this year, may it be the last.