Expiration days for options often mark turning points in the market and are therefore widely considered.

The attached indicator is here in a time series from 2004 to 2019. Extensions, improvements desired!

The indicator represents these days by coloring the background, so it does not disturb any further.

For Dax, Dow Jones, ect. ,

IF date =20040319 OR date =20040618 OR date =20040917 OR date =20041217 OR date =20050318 OR date =20050617 OR date =20050916 OR date =20051216 OR date =20060317 OR date =20060616 OR date =20060915 OR date =20061215 OR date =20070316 OR date =20070615 OR date =20070921 OR date =20071221or date =20080320 OR date =20080620 OR date =20080919 OR date =20081219 OR date =20090320 OR date =20090619 OR date =20090918 OR date =20091218 OR date =20100319 OR date =20100618 OR date =20100917 OR date =20101217 OR date =20110318 OR date =20110617 OR date =20110916 OR date =20111216or date =20120316 OR date =20120615 OR date =20120921 OR date =20121221 OR date =20130315 OR date =20130621 OR date =20130920 OR date =20131220 OR date =20140321 OR date =20140620 OR date =20140919 OR date =20141219 OR date =20150320 OR date =20150619 OR date =20150918 OR date =20151218OR date =20160318 OR date =20160617 OR date =20160916 OR date =20161216OR date =20170317 OR date =20170616 OR date =20170915 OR date =20171215 OR date =20180316 OR date =20180615 OR date =20181221 OR date =20180921 OR date =20190315 OR date =20190615 OR date =20190920 OR date =20191220 THEN
 drawvline(barindex[+0])COLOURED (30,30,250)
ENDIF

RETURN