"In the second year of the reign of Darius the king" or "After Darius had been king for more than a year" (See: [[rc://en/ta/man/translate/translate-ordinal]])
"on the first day of the sixth month." This is the sixth month of the Hebrew calendar. The first day is near the middle of August on Western calendars. (See: [[rc://en/ta/man/translate/translate-hebrewmonths]] and [[rc://en/ta/man/translate/translate-ordinal]])
This idiom is used to introduce a special message from God. Alternate translation: "Yahweh gave a message" or "Yawheh spoke this message" (See: [[rc://en/ta/man/translate/figs-idiom]])
This is the name of God that he revealed to his people in the Old Testament. See the translationWord page about Yahweh concerning how to translate this.
Here the word "hand" refers to Haggai himself. Yahweh used Haggai as the agent to deliver his command. See how you translated this in [Haggai 1:1](./01.md). Alternate translation: "through Haggai" (See: [[rc://en/ta/man/translate/figs-synecdoche]])