Specifying dow:6
would mean that each week starts with Saturday.
It seems that you will have to add few more options to switch from ISO week numbering to a custom:
localization: {
calendar: {
week: {
dow: 0, // the first day of week is Sunday
doy: 1 // the first week is the one with January 1st
}
},
infoDates: {
majorTimeFormats: {
w: "gggg" // use the custom week year, not the ISO "GGGG"
},
minorTimeFormats: {
w: "[Week] w" // use the custom week number, not the ISO "W"
},
fullTimeFormats: {
w: "[Week] w, gggg"
}
},
timeAxisDates: {
majorLabelTimeFormats: {
w: "[Week] w, gggg"
},
majorLabelFullTimeFormats: {
w: "[Week] w, gggg"
}
}
}