The 1960 calendar was a good calendar but this is what I would have done if I was in charge for F1.
1960 F1 Calendar - My suggested Calendar:
3rd July
British Grand Prix
17th July
Portuguese Grand Prix
31st July
Monaco Grand Prix
14th August
French Grand Prix
28th August
Belgian Grand Prix
11th September
Dutch Grand Prix
25th September
Italian Grand Prix
9th October
United States Grand Prix
23rd October
Argentine Grand Prix