missed lights on by 2-3 hrs wats the best plan??

i missed the lights going on by a few hrs due to unforseen shit happenin, whats the best plan of action from here as there is so much do's n donts i'm slightly confused. anyone had any experience with same prob plz put ur bit in it'll be appreciated

had 3 diff timers n none of them worked so thats why i have to do it myself.

if in flower just continue with what you were doing extra dark wont hurt dont make it a habit tho

cheers like i said unforseen shit occured which cudnt be helped