Everything goes right for the speaker of this poem. Traffic signals turn green "at my very sight," a fishmonger throws in "a couple free," and even the coffee tastes better than usual. It would be easy to read this as a lucky evening, but the poem points elsewhere. The world has not changed. The speaker has, and the whole poem is an effort to work out why.
The first two stanzas are a list of small marvels, and the list itself is revealing. The opening line, "The evening was full of surprises," promises something dramatic, yet the surprises are ordinary: brighter sunshine, polite youngsters, a good cup of coffee. The poem's comedy lies in this gap. Some claims are too sweeping to be literal. "Every woman looked beautiful" and streets "full of decent men" are the generous exaggerations of a mind that has stopped looking for faults. The traffic signals are funnier still, since the speaker half-jokingly takes personal credit for them. He is amused by his own good mood and does not take himself too seriously.
The reason arrives in the third stanza, which is also the longest and slowest. At a corner shop, the speaker reads a letter in English aloud to a worker who cannot read it, and tells him that "His daughter will be home for X'mas." The poem has given no hint of this until now, so it works as a quiet reveal. The word "unlettered" is the most formal in the poem, and it makes the gap between the two men plain. One holds a skill the other lacks. But the poem shows the skill as a way of giving, not as a mark of status. The worker "listened joyfully," and that joy seems to flow back to the reader of the letter. Judging by the order of the poem, the speaker's radiant evening and the kindness are linked, though the poem never says so. It leaves us to make the connection.
The ending adds a final turn. Walking "slowly," the speaker catches his reflection in shop windows and sees "A happy, smiling, me." The phrasing is odd and deliberate. He says "I saw me" instead of "I saw myself," as though he were meeting a stranger he is pleased to know. The commas around "smiling" force the line to move in small steps, and the last word "me" lands alone, stressed. The glass panes also work as a quiet symbol. Throughout the poem the speaker has been looking at the world, and in the end the world gives him back to himself. The brightness he saw in the streets was his own.
Formally, the poem is plain. It is free verse with no end rhyme, in four stanzas of four, four, five and three lines. The shrinking final stanza feels like a breath released. The rhythm is conversational and close to speech, as though the speaker were telling a friend about his day. Small sound patterns appear without being forced, as in "brighter, merrier tinge," where the comparatives chime. Flat statements such as "The coffee tasted so good" carry no ornament at all, and their simplicity suits a contentment that needs no decoration. Even "X'mas," in its casual abbreviation, keeps the language everyday and unliterary.
The title, "Sun Shines Brightly," is stated as a plain fact, with no article, almost like a weather report. By the end it reads differently. The sun may be shining outside, but the brightness belongs to the speaker's state of mind. The dateline reads Trivandrum, 08.12.09; if that means 8 December 2009, the Christmas news fits the season, though the poem never makes the setting a theme.
The poem matters because it makes a large claim in a small, unshowy way: kindness changes how we see everything around us. It avoids lecturing. There is no moral, only an evening, a letter and a reflection. The speaker does a small favour and never calls it generosity. What he receives in return is the discovery that the world looks kinder when we have been kind. A poem this modest could easily feel slight, but its gentle humour and its final image of the speaker meeting his own happiness in a shop window give it a warmth that stays with the reader.