It's not uncommon for me to start charting a call that occurred at 5am the following day of starting "On-Call" and forgetting that it's actually another day gone by - it happened today, not yesterday, which was of course tomorrow when this shift started.
Confused? Try staying up for 30 hours and then having a case study due. That will clear it up.
Fortunately, God is there in the midst of each On Call. God was there, is there and will be there.
...And remember, I am with you always, to the end of the age. Matthew 28:20b
Which moment are you in at this time?