A C182 PLT; DURING TWR CLOSURE; TAXIED FOR AN IFR DEP AT HPN AND HAD JUST CROSSED THE HOLD SHORT LINE BY A FEW FT WHEN HE HEARD A B737 ON 5 MI FINAL. THE CESSNA PLT HELD HIS POS UNTIL THE B737 LANDED.

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PLT OF ACFT #1 WAS UNFAMILIAR WITH ARPT AND WAS TAXIING FOR DEP ON RWY 34. WINDS WERE CALM AND OTHER ACFT WERE LNDG/DEPARTING ON BOTH RWY 16 AND RWY 34. PLT OF ACFT #1 WAS OBTAINING IFR CLRNC AND MAKING GENERAL LOCATION ANNOUNCEMENTS WHILE TAXIING. NEW YORK APCH ADVISED PLT OF ACFT #1 TO ADVISE WHEN READY FOR TKOF. PLT #1 POSITIONED ACFT #1 BEHIND HOLD SHORT LINE FOR RUN-UP. PLT #1 THEN MOVED ACFT #1 FORWARD; CHKING (TURNING L) AND CALLED NEW YORK APCH FOR RELEASE. NEW YORK APCH IMMEDIATELY ADVISED THAT A B737 WAS INBOUND FOR RWY 16. PLT #1 IMMEDIATELY HALTED A FEW FT BEYOND THE HOLD SHORT LINE (TXWY K). PLT #1 THEN HEARD PLT OF ACFT #2 ANNOUNCE POS 5 MI OUT. AT THIS POINT; PLT #1 DECIDED THAT; DUE TO THE PRESUMED SPD OF ACFT #2; THERE WOULDN'T BE TIME TO DO A 180 DEG TURN ON THE RWY AND THEN EXIT AGAIN. PLT #1 ALSO COULDN'T BE CERTAIN THAT A 180 DEG TURN ON TXWY K COULD BE ACCOMPLISHED WITHOUT COMING TOO CLOSE TO A TXWY LIGHT. PLT #1 DETERMINED THAT ACFT #1 WAS A SAFE DISTANCE FROM RWY 16 (ALTHOUGH POSITIONED A FEW FT BEYOND THE HOLD SHORT LINE) TO ALLOW A SAFE LNDG BY ACFT #2. ACFT #2 MADE A NORMAL LNDG (WITHOUT COMMENT BY PLT #2). ACFT THEN DEPARTED RWY 34. THIS INCIDENT COULD BE PREVENTED HAD THE CTL TWR BEEN IN OP AND IF PLT #1 WERE MORE FAMILIAR WITH THE ARPT. PLT #1 ACKNOWLEDGES THAT PLT #2 SHOULD HAVE BEEN INFORMED OF THE SIT BY PLT #1.