Below are the DateTimeQualifierCodes and what they mean:

CANCELDATE = "001";
REQUESTEDDELIVERY = "002";
CUSTOMERORDER = "006";
EFFECTIVE = "007";
REQUESTEDSHIP = "010";
ACTUALSHIP = "011";
DISCOUNTDUE = "012";
NETDUEDATE = "013";
PROMOTIONSTART = "015";
PROMOTIONEND = "016";
ESTIMATEDDELIVERY = "017";
AVAILABLE = "018"; // When next available
DATEUNLOADED = "019";
CHECK = "020";
ACTUALDELIVERY = "035";
DISCONTINUED = "036";
EARLIESTSHIP = "037";
LATESTSHIP = "038";
PUBLISHED_PUBLICATION = "043";
RECEIVEDDATE = "050";
ACTUALPORTOFENTRY = "057";
ENGINEERINGCHANGE = "060";
LATESTDELIVERY = "063";
EARLIESTDELIVERY = "064";
CURRENTSCHEDULEDELIVERY = "067";
SCHEDULEDSHIP = "068";
PROMISEDFORDELIVERY = "069";
FIRSTARRIVE = "071";
LASTARRIVE = "074";
REQUESTEDFORDELIVERYWEEKOFDATE = "077";
PROMISEDSHIP = "079";
SCHEDULEDFORSHIPMENT_WEEKOF = "086";
DOCUMENT_TRANSACTIONDATE = "097";
REQUESTEDPICKUPDATE = "118";
OPENING = "145";
CLOSING = "146";
RELEASE = "168";
REVISION = "171";
MATERIALSPECIFICATION = "191";
STARTDATE = "196";
ENDDATE = "197";
ACCEPTBY = "201";
PAYMENT_PENALTY = "220";
PLANNED = "291";
CHANGE = "328";
ACTUALDEPARTUREDATE = "370";
ACTUALARRIVALDATE = "372";
PRODUCTION = "405";

SHELFLIFEEXPIRATION = "511";
REJECTED = "598";
DECISION = "619";
STORED = "807";
POST = "809";
MATURITYDATE = "815";
ACTIVITY = "945";
RECORDING = "995";
ESTIMATEDARRIVALPOINT = "AA1";
ESTIMATEDDISCHARGEPOINT = "AA2";
OFFEREXPIRY = "AAH";
INSTALLMENT = "AAL";
BESTBEFOREDATE = "BBD";
CONTRACTSIGNATUREDATE = "CSD";
DELIVERYNOTEDATE = "DND";
AUTHORIZATION = "EDC";
FIRSTCONSUMERSALESDATE = "FCS";
DATEORDERRECEIVEDBYSUPPLIER = "ORS";
SOLD = "SOL";
TAXPOINTDATE = "TPD";