monthStartFormat
The date format for the first cell of each month, when a dayGrid view spans several months.
format string, default: { month: 'long', day: 'numeric' }
The default format will yield something like “January 1”.
The date format for the first cell of each month, when a dayGrid view spans several months.
format string, default: { month: 'long', day: 'numeric' }
The default format will yield something like “January 1”.