Historical clue formulations

• Eddying — 2021-06-14
• Like a vortex — 2016-08-04
• Like the snow in a shaken snow globe — 2014-09-23
• Spiraling — 2013-04-11
• Spinning dizzily — 2013-01-07
• Eddying — 2011-04-07
• Eddying — 2006-09-20
• Like an eddy — 2002-09-11
• Like an eddy — 1996-11-20
• Eddying — 1994-10-06
• Turning — 1994-03-17