CREATELOGINDATE and LASTLOGINDATE returning same value

Anyone know why the return value for the following fields from TS_USERS are returning the same value even though the database field value is this:

DB Field Value:
[TS_CREATELOGINDATE] 1531180800
[TS_LASTLOGINDATE] 1547164800

objExistingUser.GetfieldValue("CREATELOGINDATE", userCreateDate) 1531180800
objExistingUser.GetfieldValue("LASTLOGINDATE", userLastLoginDate) 1531180800