**Summary of the Poem 'Dust of Snow':**
The poem 'Dust of Snow' by Robert Frost describes a simple moment in the poet's day that has a profound impact on his mood and saves the rest of his day from being wasted. The poet is initially feeling downcast and burdened by the weight of his problems. However, a chance encounter with a crow shaking off snow from a hemlock tree changes his perspective and lifts his spirits. The falling snow, which could be seen as a symbol of sadness and despair, is transformed into a source of inspiration and renewal for the poet.

**Explanation of the Significance of the Simple Moment:**
1. **The Poet's Initial State of Mind:** At the beginning of the poem, the poet is described as feeling burdened and troubled. This is evident from the description of the "hemlock tree" and the "crow" as symbols of darkness and gloom. The poet's day seems to be wasted as he is weighed down by his problems and sorrows.

2. **The Unexpected Encounter:** The turning point in the poem occurs when the poet witnesses a crow shaking off snow from a hemlock tree. This simple act catches the poet's attention and disrupts his negative thoughts. The crow's actions symbolize a moment of release and freedom from the weight of the snow, which can be seen as a metaphor for the poet's burdens.

3. **The Transformation of the Snow:** The falling snow, which initially represents the poet's troubles, is transformed into a positive force. The "dust of snow" that falls on the poet's path acts as a catalyst for change, lifting his spirits and providing him with a renewed sense of hope and inspiration. It serves as a reminder that even in the midst of darkness, there is always the possibility for redemption and renewal.

4. **The Saving of the Poet's Day:** The significance of this simple moment lies in its ability to save the rest of the poet's day from being wasted. The poet's mood is uplifted, and he is able to see the beauty and potential in the world around him. The encounter with the crow and the falling snow act as a catalyst for a change in perspective, allowing the poet to overcome his initial state of despair and find meaning in his day.

In conclusion, the poem 'Dust of Snow' highlights the significance of a simple moment in saving the rest of the poet's day from being wasted. It demonstrates the power of unexpected encounters and the transformative nature of even the smallest acts of beauty and grace. The poem serves as a reminder that amidst the challenges and burdens of life, there is always the possibility for redemption and renewal.