They are still allowed.  This guy's had one for 30 years.  They have always been a real pain in the you know what.  In the past the, 2017 and prior, the Form 1040 had a place at the top to insert the fiscal year end.  Not any more.  IRS 1040 instruction say to type that info at the top of the new 1040 or 1040-SR.  Thanks for the input.