English ⇄ Russian

I have a good bow, but it is in the castle stresses
proverb	дорого яичко к Светлому дню (that is most appreciated that is given or offered when needed and not too late); дорого яичко к Христову дню (that is most appreciated that is given or offered when needed and not too late); дорого яичко к Великому дню (that is most appreciated that is given or offered when needed and not too late)