Finding this lesson on Kwiziq has proved a real revelation for me! I've been learning Spanish for the last 3-4 years through online courses geared toward Latin American Spanish and wasn't aware of this difference. I've always been aware of some regional vocabulary differences but, since I've geared my learning toward Peninsular Spanish (which I need), I'm now finding quite a few grammatical differences too. I had seen the perfect used in this way in El País articles and books etc but I'd not been able to find any resource that actually explained it... until now!
Could you answer how specific times might influence choose of tense?
I spoke to him at 3am this morning
His flight left at 6pm today
These specific times seem to indicate start and finish times. Do they point toward preterite?