Ranges are for THU-THU, 5-12 Sivan - June 5-12, '03
Remember: EIRUV TAVSHILIN
Candle lighting for Yom Tov - 7:07pm (L'HADLIK NER SHEL YOM TOV & SHEHECHEYANU)
SUNRISE ON SHAVUOT MORNING - 5:33½am
Candle lighting for Shabbat (from pre-existing flame only) - 7:07pm (earliest - 6:14pm)
Havdala for Shabbat 8:27pm (Rabbeinu Tam - 9:09pm)
Other times
Earliest Shacharit 4:35-4:34am
Sunrise - 5:33½-5:33pm
Sof Z'man Kri'at Sh'ma - 9:05-9:05am (8:10-8:10am)
Sof Z'man Shacharit - 10:16-10:15am (9:39-9:39am)
Chatzot (halachic noon) - 12:37½-12:39am
Mincha Gedola (earliest Mincha) - 1:14-1:15pm
Plag Mincha - 6:13 - 6:16pm
Sunset - 7:47 - 7:50pm (7:41½-7:45pm)

Explanation of the Z'manim
Sunrise for Jerusalem does not take into account elevation, since the eastern horizon (where the sun rises) consists of the Hills of Moav across the Jordan River, which are approx. at the same elevation as Jerusalem

Sunset, on the other hand, is given for an elevation of 825m and, in parentheses, as if at sea level. There are different opinions as to which sunset time should be used for halachic purposes. We present both times.
The deadlines for the SH'MA and the Shacharit Amida can be calculated in two ways. Either considering the day to be from sunrise to sunset or from dawn to stars out. The first way of reckoning is known as the opinion of the GR"A, and is the first time given in each case. The second method is known as the Magen Avraham, and is presented in parentheses.

Aside from candle lighting and havdala, the times are presented as a range, from the current Thursday of the issue of Torah Tidbits until the coming Thursday, a span of 8 days. Days between the two Thursdays can be determined by interpolation (which means: a method by which to estimate a value of between two known values - this is something that people above a certain age might remember from high school trigonometry and logarithms, but younger people who went to school during the calculator era might not be familiar with).

It is usually wise to "pad" the times with a minute or two in the "play it safe" direction. E.g. Plag Mincha. Better to finish Mincha a minute or two before the given time. But, better to not light candles until a minute or two after the given time.