Now!

2 Corinthians 6

New American Standard Bible (NASB)

 ¹ And working together with Him, we also urge you not to receive the grace of God in vain— ² for He says,
   “AT THE ACCEPTABLE TIME I LISTENED TO YOU,
AND ON THE DAY OF SALVATION I HELPED YOU.”
   Behold, now is “THE ACCEPTABLE TIME,” behold, now is “THE DAY OF SALVATION”

http://www.biblegateway.com/passage/?search=2%20Corinthians%206&version=NASB


Behold: NOW is the acceptable time!  NOW is the day of salvation! :)