编辑代码

var moment = require("moment");

var start = "2022-03-07 00:00:00";
var len = 6;


var arr = [];

for (var i = 0; i < 12; i++) {
    var etime = moment(start).add("days", len).format("YYYY-MM-DD") + " 23:59:59";
    arr.push([start, etime]);
    start = moment(etime).add("days", 1).format("YYYY-MM-DD") + " 00:00:00";
}


console.log(arr);