Angelic Wisdom Concerning the Divine Love and the Divine Wisdom. Emanuel Swedenborg

Consequently, the angels do not know what time is, and when it is mentioned they perceive in place of it state; and when state determines time, time is only an appearance. For joyfulness of state makes time seem short, and joylessness of state makes time seem long; from which it is evident that time in the spiritual world is nothing but quality of state. It is from this that in the Word, "hours," "days," "weeks," "months," and "years," signify states and progressions of state in series and in the aggregate; and when times are predicated of the church, by its "morning" is meant its first state, by "mid-day" its fullness by "evening" its decline, and by "night" its end. The four seasons of the year "spring," "summer," "autumn," and "winter," have a like meaning.