highlights = [
d3.timeHour.range(
new Date("2022-01-06").setHours(16),
new Date("2022-01-06").setHours(21),
1
),
d3.timeHour.range(
new Date("2022-01-07").setHours(16),
new Date("2022-01-07").setHours(21),
1
),
d3.timeHour.range(
new Date("2022-01-08").setHours(16),
new Date("2022-01-08").setHours(21),
1
)
].flat()