Historical clue formulations

• Our planet, to Germans — 2014-12-30
• One of die Planeten — 2014-01-12
• Our planet, to a German — 2013-11-19
• Earth, to Brahms — 2012-12-04
• Our planet, to a Berliner — 2011-03-08
• Himmel und ___ (apple-and-potato dish) — 2010-08-20
• Earth, in Essen — 2009-12-08
• One of the Planeten — 2009-06-14
• Our 6-Down, in Germany — 2006-08-22
• Earth, to Mahler — 2006-07-11
• Second planet past Merkur — 2004-08-19
• Mahler's "Das Lied von der ___" — 2004-08-09
• One of die Planeten — 2004-07-10
• Solid ground, in Stuttgart — 2004-02-20
• "Das Lied von der ___" — 2003-12-18
• Earth, to Mahler — 2003-04-16
• Third planet from die Sonne — 2002-11-22
• Mahler's "Das Lied von der ___" — 2002-10-13
• "Das Lied von der ___" — 2001-04-29
• Earth, in Essen — 2001-01-27
• Mahler's "Das Lied von der ___" — 2000-11-24
• Mahler's "Das Lied von der ___" — 1997-06-04
• Mahler's "Das Lied von der _____" — 1994-06-10