bugrasan
Seven Databases in Seven Weeks, Second Edition: Page 17, "Christmas Day" has wrong starts timestamp
Page 17 lists the “starts” timestamp of “Christmas Day” as '2018-02-15 19:30:00" (might be a little early 
), but doesn’t match with query result on page 19 (at the bottom).
Therefore the starts timestamps should be ‘2018-12-25 00:00:00’.
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