Open the config-adam-1.0.xml document and go to lines 939 to 941. Or somewhere close to there depending on which version you are using. These contain the valid formats which we scraped from various SAS resources. We do include many ISO8601 type formats. If you want to add more, you can add them to the terms field for the rule.
Date (DT):
B8601DA, B8601DN , DATE, DAY, DDMMYY, DDMMYYB, DDMMYYC, DDMMYYD, DDMMYYN, DDMMYYP, DDMMYYS, DOWNAME, DTMONYY, E8601DA, JULDAY, JULIAN, MMDDYY, MMDDYYB, MMDDYYC, MMDDYYD, MMDDYYN, MMDDYYP, MMDDYYS, MMYY, MMYYB, MMYYC, MMYYD, MMYYN, MMYYP, MMYYS, MONNAME, MONTH, MONYY, PDJULG, PDJULI, QTR, QTRR, WEEKDATE, WEEKDATX, WEEKDAY, WEEKU, WEEKV, WEEKW, WORDDATE, WORDDATX, YEAR, YYMM, YYMMDD, YYMMDDB, YYMMDDC, YYMMDDD, YYMMDDN, YYMMDDP, YYMMDDS, YYMMB, YYMMC, YYMMD, YYMMN, YYMMP, YYMMS, YYMON, YYQ, YYQB, YYQC, YYQD, YYQN, YYQP, YYQS, YYQR, YYQRB, YYQRC, YYQRD, YYQRN, YYQRP, YYQRS
Time 
:
B8601LZ, B8601TM, B8601TZ, E8601LZ, E8601TM, E8601TZ, HHMM, HOUR, MMSS, TIME, TIMEAMPM
Datetime (DTM):
B8601DT, B8601DZ, DATEAMPM, DATETIME, DTDATE, DTWKDATX, DTYEAR, DTYYQC, E8601DN, E8601DT,E8601DZ, MDYAMPM, TOD