Bucharest is 8 hours ahead of Mexico City
Best overlap: 8:00 AM to 10:00 AM in Mexico City is 4:00 PM to 6:00 PM in Bucharest.
The overlap falls at 8:00 AM to 10:00 AM in Mexico City, or 4:00 PM to 6:00 PM if you're in Bucharest. Just 2 hours of shared hours means there's little margin — set 8:00 AM in Mexico City (4:00 PM in Bucharest) and start promptly. Heads up: because Bucharest changes its clocks and Mexico City doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.