String format for DateTime in C#

In C# language, there are the following custom format specifiers for date and time:
y - year
M - month
d - day
h - hour 12
H - hour 24
m - minute
s - second
f - second fraction
F - second fraction, trailing zeroes are trimmed
t - P.M or A.M
z - time zone


Some examples on how to use them (the output is commented at the end of each line):

/*
In this example, we create an DateTime object (whose name is "dt") that representes
the date and time: 2008-03-09 16:05:07.123
*/
DateTime dt = new DateTime(2008, 3, 9, 16, 5, 7, 123);

String.Format("{0:y yy yyy yyyy}", dt);  // "8 08 008 2008"   year
String.Format("{0:M MM MMM MMMM}", dt);  // "3 03 Mar March"  month
String.Format("{0:d dd ddd dddd}", dt);  // "9 09 Sun Sunday" day
String.Format("{0:h hh H HH}",     dt);  // "4 04 16 16"      hour 12/24
String.Format("{0:m mm}",          dt);  // "5 05"            minute
String.Format("{0:s ss}",          dt);  // "7 07"            second
String.Format("{0:f ff fff ffff}", dt);  // "1 12 123 1230"   sec.fraction
String.Format("{0:F FF FFF FFFF}", dt);  // "1 12 123 123"    without zeroes
String.Format("{0:t tt}",          dt);  // "P PM"            A.M. or P.M.
String.Format("{0:z zz zzz}",      dt);  // "-6 -06 -06:00"   time zone