Starting from the beginning of the track, the sample is from [8.00 - 9.00 secs], slowed down 8x.
In the clip, you can hear Edge hit two notes and then the delays follow for them both.
Edge has a reverse reverb effect on the guitar. You can clearly hear the reverb hit slightly before the attack.
There may also be a harmonizer/shimmer effect.
The delay is 420ms (= 3/16 @ 107 bpm).
Here's the sample clip I studied for this song
(it's slowed down 8x maintaining the same pitch)
There's 1 main delay (see above notes about the reverb though). This is the most likely signal path:
