Hi there Im running Cyanogenmod with 4.2.2 and already decompiled SystemUI.apk but now in \SystemUI\smali\com\android\systemui\statusbar\policy i see a Clock.smali and Clock$1.smali.
Clock.smali
.line 100
invoke-virtual {p0}, Lcom/android/systemui/statusbar/policy/Clock;->updateClock()V...