Around what time do Playstation Plus games update?

There's a game I'd like to play coming about today some time and I don't know at what point it actually updates. Just wanted to know if there's some idea as to when. I am CST (-6:00) if that helps.

For the vita its always like 5pm on the day in PAL region. Should be midnight would be awesome.

I got home and I see PS+ August free games are up right now for you to Download.

Get to Downloading fellow gamer; There is a lot to DL if you have all three PS systems.

---

VITA (4 Games)

1. Metrico (Brand new game by Sony)
2. FEZ (91/100)
3. Proteus (80/10)
4. Dragon's Crown (82/100)
5. (LEGO Harry Potter Years 5-7 instead of DC for Europe)

PS3 (4 Games)

1. FEZ (91/100)
2. Crysis 3 (77/100)
3. Dragon's Crown (82/100)
4. Proteus (80/10)

PS4 (2 Games)

1. Road Not Taken (Brand new game by Spry Fox)
2. FEZ (91/100)