Prayer is Never out of Season

Prayer is never out of season--in summer and in winter its results are precious. True prayer is true power. You may not always get what you ask, but you will always have your true needs supplied. When God does not answer His children according to the letter, He does so according to the Spirit. If you ask for course grain, will you be angry because He gives you the finest flour. Do not forget to make your request for the Lord is ready to grant your desires. Prayer is an open door which none can shut.
... "and their prayer came up to His holy dwelling place, to heaven." 2 Chronicles 30:27

Prayers are instantly noticed in heaven. Do not think that your prayer, however weak or trembling, will be unregarded. Our God not only hears prayer but also loves to hear it.
"He does not forget the cry of the humble." Psalm 9:12

God marks prayers down in the registry of his memory. He puts our prayers, like rose leaves between the pages of His book of remembrance, and when the volume is opened at last, there will be a precious fragrance springing up from it.

(From daily devotional of Charles Spurgeon)