We show daylight length in Brasilia during 2021 and the equinoxes and solstices. From June 1, 2021 until June 19, 2021, daylight becomes shorter. From June 20, 2021 until June 21, 2021, daylight becomes shorter. From June 22, 2021 until December 20, 2021, daylight becomes longer. From December 21, 2021 until December 22, 2021, daylight does not vary. From December 23, 2021 until May 31, 2022, daylight becomes shorter.
We show the equation of time during 2021. In the graph, the day of the year in the x axis starting from January, and the difference between mean solar time and apparent solar time in the y axis.
The day with the highest negative value is Monday, September 13 2021.
The day with the highest positive value is Saturday, June 5 2021.
Apparent solar time and mean solar time are of the same length on the following days of the year:
Time of sunrise, sunset, dawn and dusk in Brasilia during 2021.