time()
(int) (System.currentTimeMillis() / 1000)
Time.now.to_i
SELECT unix_timestamp(now())
import time time.time()
date +%s
Math.round(new Date() / 1000)
NSDate().timeIntervalSince1970
os.time()
(DateTime.Now.ToUniversalTime().Ticks - 621355968000000000) / 10000000