this (morning/afternoon/evening)
"This morning" means the morning today. You can use it to talk about something earlier or later:
What time did you leave this morning?
What time are you leaving this morning?
"This afternoon" and "this evening" work the same way:
I had coffee with Mr. Hernandez this afternoon.
Hey, are you doing anything this evening? I was invited to this party and I was wondering if you'd like to join me.
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