Canon EOS REBEL T8i Advanced User's Manual page 373

11.
Check the settings.
(1) Time required
Indicates the time required to shoot the set number of shots with the set
interval. If it exceeds 24 hours, "*** days" will be displayed.
(2) Playback time
Indicates the movie recording time (time required to play back the movie)
when creating the time-lapse movie in 4K movie or Full HD movie from the
still photos taken with the set intervals.
12.
Close the menu.
Press the < > button to turn off the menu screen.
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