О gosh ... в итоге нашёл способ:
=if(and(today()>Summer!B1,today()<'Late Summer'!B1),arrayformula(Summer!A4:E24),if(and(today()>'Late Summer'!B1,today()<Winter!B1) , arrayformula('Late Summer'!A4:E24), if(today()> Winter!B1 ,arrayformula(Winter!A4:E24),"Error")))