设x时y分分针和时针成60度角,
则|30（x+y/60)-6y|=60,
|60x-11y|=120,
∴60x-11y=土120,
y=(60x干120）/11,
x=8时y=360/11或600/11；
x=9时y=420/11或60.
答：8时360/11分,8时600/11分,9时420/11分,10时.