Strong's:χθές "yesterday"; by extension, in time past or hithertoDerivation: of uncertain derivation;KJV Usage: yesterday.
TBESG:χθέςyesterdayG:Adv ἐχθές (Rec. χθές), adv., [in LXX for תְּמוֹל, etc. ;] yesterday: Refs Jhn.4:52, Act.7:28, Heb.13:8 (on the form, see Rutherford, NPhr., 370 f.).† (AS)
χθές chthes khthes Of uncertain derivation; “yesterday”; by extension in time past or hithertoKJV Usage: yesterday.