js formato de fecha aaaa-mm-dd
yourDate.toISOString().split('T')[0]
Formato DateTime.Ahora a aaaa-mm-dd c#
var dateString1 = DateTime.Now.ToString("yyyyMMdd");
var dateString2 = DateTime.Now.ToString("yyyy-MM-dd");
Console.WriteLine("yyyyMMdd " + dateString1);
Console.WriteLine("yyyy-MM-dd "+ dateString2);
Convertir una fecha en formato yyyy mm dd
const formatYmd = date => date.toISOString().slice(0, 10);
formatYmd(new Date());
python fecha de aa/mm/dd aa-mm-dd
lastconnection = datetime.strptime("21/12/2008", "%d/%m/%Y").strftime('%Y-%m-%d')
python formato de fecha aaaa-mm-dd
from datetime import datetime
now = datetime.today().isoformat()
print(now) # '2018-12-05T11:15:55.126382'