Qantas Frequent Flyer - Qantas 747 taking off from SIN at 10am?

I was flying out of Singapore on SQ yesterday (30/4) at ~10am and a QF 747 took off in front of us.. Where is a QF 747 headed at this hour ?

It fits with a 12 noon departure LHR-SIN-SYD but I thought that was canned a while back.

Qf6 fra-sin-syd

Barring an A380 going tech and being replaced by a 747 to LHR, FRA is the only flight to/from europe with 747s now, and it's a night departure out of FRA and SIN.

It appears that QF6 on Saturday was delayed overnight in FRA. (1445 Sun from 2220 Sat) Arriving SIN 16 hours late at 0840 Monday.

Himeno is correct.
But do not forget that QF51/52 BNE-SIN-BNE is also a 747.

That's correct and I have seen it too and thought about it too... I thought they are supposed to be arrived in SIN in the evening.