Answer:
about 7-10 days
It usually takes about 7-10 days to get the tomato and pepper seedlings fully hardened off.
Explanation:
Guide to Hardening-off
Harden off gradually, so that seedlings become accustomed to strong sunlight, cool nights and less-frequent watering over a 7-10 day period. On a mild day, start with 2-3 hours of sun in a sheltered location. Protect seedlings from strong sun, wind, hard rain and cool temperatures.
