How can I determine a specific day and know how many will be here at a certain date, for example: If I want to know how many times will San Juan fall on Saturday from here to 2100. I imagine that I should do several conditions but I do not know how to expose it in code could someone help?
Greetings.
You only have to create the Date objects corresponding to each year between now and 2100 and check the day of the week with the getDay method:
var cont = 0;
for(var year=(new Date()).getFullYear()+1; year<=2100; year++){
var sanJuan = new Date(year, 5, 23);
if (sanJuan.getDay()===6){
console.log('El ' + sanJuan.toLocaleDateString() + ' caerá en sábado.');
cont++;
}
}
console.log('De aquí al 2100 San Juan caerá en sábado ' + cont + ' veces.');