California Code, Civil Code - CIV § 3440.6

(a) The date the person bringing the action or making the levy should have discovered the transfer in the exercise of reasonable diligence.

(b) The date the person bringing the action or making the levy obtained actual knowledge of the transfer.

(c) The date the delivery of, and actual and continued change of possession of, the property transferred occurred.

(d) If the financing statement filed pursuant to subdivision (h) of Section 3440.1 has not lapsed, the date the filing and publication requirements of subdivision (h) of Section 3440.1 were met, other than the requirement that the filing of the financing statement and publication of the notice referred to therein be completed prior to the transfer.