python carimbo de data / hora para aaaa-mm-dd
import datetime as dt
dt.datetime.utcfromtimestamp(seconds_since_epoch).strftime("%Y/%m/%d %H:%M")
Converter uma data para aaaa mm dd
const formatYmd = date => date.toISOString().slice(0, 10);
formatYmd(new Date());
python data de dd/mm/aa para aa-mm-dd
lastconnection = datetime.strptime("21/12/2008", "%d/%m/%Y").strftime('%Y-%m-%d')