Which LEG TIME leaves the fix on time?
B737-800, LNAV hold. Enter the HOLD page FIX ETA, the ATC time and the PROG 2/2 wind. The LEG TIME to set and the predicted crossings update as you type.
Example
These are example values. Replace them with today's figures.
Speed & level
Wind on the inbound leg
The head/tail and crosswind components the FMC shows on PROG 2/2 while you are inbound to the fix.
Head / tail kt
Times UTC
Calibrate to the aircraft optional
The one uncertain input is the bank angle the FMC designs its turns for. Time one circuit at the LEG TIME entered above (fix crossing to fix crossing, or last crossing to FIX ETA) and the bank angle is adjusted to match.