Dates for the heliospheric current sheet crossings by the Earth between
1988 and 1993
Boundaries are determined on the basis of the Bartel Rotation charts of the
daily IMF polary obtained by combining the OMNI data with the "inferred IMF
polarity" (no inferred polarity was available for 1990).
1988 Jan 12 -/+
Jan 25 +/-
Feb 10 -/+
Feb 21 +/-
Mar 7 -/+
Mar 22 +/-
Apr 5 -/+
May 3 -/+
** Jun 19 -/+
Jun 29 +/-
Jul 14 -/+
Jul 25 +/-
Aug 12 -/+
Aug 20 +/-
Sep 10 -/+
** Sep 18 +/-
Oct 4 -/+
Oct 14 +/-
Oct 30 -/+
Nov 11 +/-
Nov 25 -/+
1989 Jan 3 +/-
** Jan 20 -/+
Jan 31 +/-
Feb 28 +/-
Apr 28 +/-
May 24 +/-
Aug 11 -/+
Sep 8 +/-
Sep 19 -/+
** Oct 3 +/-
Oct 15 -/+
Oct 29 +/-
Nov 12 -/+
Nov 20 +/-
1991** Jan 25 -/+
Jan 30 +/-
Feb 26 +/-
Mar 26 +/-
Apr 9 -/+
May 7 -/+
May 22 +/-
Jun 18 +/-
Jul 1 -/+
Jul 14 +/-
** Jul 31 -/+
Aug 27 -/+
Sep 10 +/-
Sep 24 -/+
Oct 4 +/-
Oct 21 -/+
Nov 2 +/-
Nov 29 +/-
1992 Jan 31 -/+
Apr 2 -/+
Jun 15 +/-
** Jun 28 +/-
Aug 15 +/-
Aug 25 -/+
Sep 10 +/-
Oct 13 +/-
Nov 22 -/+
** Dec 7 +/-
Dec 19 -/+
1993 Mar 2 +/-
May 6 +/-
Jul 26 +/-
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