Q+ = 17+ = 18
In Zulu Time 19 is at the 45 min mark
Wind the clock is PILOT jargon for setting the clock to Zulu
40,000 feet is where pilots fly AF1
Q has used several elements of pilot jargon
This thread proposes that drops 1-60 are the crumbs
Meaning the minute markers
https://threadreaderapp.com/thread/1286655204302127105.html
And if you want to study/save/share offline attached is a PDF