28/29 February 1945 (so my info anyway, not sure offhand if it was leap year or not...)
416th Night Fighter Squadron, Mosquito NF.30 MM476, Captain Lawrence E. Englert and 2nd Lieutenant Earl R. Dickey.
"Every night at around nine o’clock for several weeks during the winter 1945, a German Ju-188 reconnaissance aircraft would fly over the American air base of Pontedera, Italy. Because of the regularity of these overflights, the intruder was nicknamed “Recon Charley”. On the night of the February 28, however, a de Havilland Mosquito was readied with USAAF Capt. Larry Englert al the controls and Lt. Earl Dichney working the radar. When the Ju-188 reappeared on the scene like a clockwork, the Mosquito took off in pursuit. The night fighter located Recon Charley but because of the Mosquito’s rapid closure rate it was in dangerous proximity to the target at the time the pilot opened the fire. The Ju-188, caught unaware of the Mosquito’s presence, began to disintegrate. Some of the debris struck the Mosquito, harming the engines and causing hydraulic damage. Upon return to Pontedera, the limping aircraft was greetedby a fog blanketing the base. Able to spot the glow of the runway lights, Captain Englert manoeuvred the Mosquito over the faint landmarks, and than, with Lieutenant Dickey bailed out. These two members of the 416th Night Fighter Squadron not only survived, but became the only Americans to achieve a confirmed victory flying a British built Mosquito during World War II.
E/A Ju 188D-2 of 4(F)./122,Shot down NW of Cremona at about 2300 hour by a Mosquito night fighter while returning from a night photo recce over Naples, 100%, 4 KIA (including pilot Ltn. Fritz Wollert) and 1 WIA (Fw. Heinz Schlenaider). Il ricognitore era uno Ju-188D-2 W.Nr.230412 del 4° Staffeln. Questi bimotori avevano a bordo due macchine fotografiche per la ripresa notturna NRb (Nachtreihenbildkamera) 40/25 opppure NRb 50/25. "
Sources: Serial number from Norman Malayney. Details from
http://www.analisidifesa.it/numero13/eng/stoeng-uniquen.htm. E/A details from
http://www.wekusta.co.uk/html/february_1945.html . Italian-language details from
http://www.analisidifesa.it/numero13/storia-unabbat-notturnounico.htm Information on Schlenaider from
http://www.luftwaffedata.co.uk/wiki/index.php?title=Aufkl._Gr._122_Feb_1945