[interestednovice]

It's 2200 on Fridays - could that be what you are thinking off? 0200 UK Time Monday morning though before Washington is usually on air on Sunday nights

In summary the usual Washington times are (ignoring taped back half hours):
Mon-Thu: 2200-2300, 0200-0500 UK time
Fri: 2200-0500
Sat: 2300-0500
Sun: 0200-0500 Monday morning UK time

Or viewed another way:
0200-0500 daily
2200-2300 Mon-Fri
2300-0200 Fri+Sat (Sat+Sun in Singapore)

Yes, I think that must have been exactly what I was thinking of! I was aware that Newsday only aired Monday-Friday, Singapore mornings (and was therefore a Sunday night to Thursday night programme, speaking from a UK-perspective).

I don’t think I realised that Friday night was treated slightly differently to Saturday night, though. I suppose that’s more due to shift patterns in NBH.

Thank you for confirming the various broadcasting hours, sorry for the mistake.