Length of Days in Hanoi
We show daylight length in Hanoi during 2021 and the equinoxes and solstices. From June 1, 2021 until June 20, 2021, daylight becomes longer. From June 21, 2021 until June 22, 2021, daylight does not vary. From June 23, 2021 until December 21, 2021, daylight becomes shorter. From December 22, 2021 until May 31, 2022, daylight becomes longer.
Equation of Time vs Day of the Year
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:
- Tuesday, January 12 2021 (Day 12)
- Saturday, April 3 2021 (Day 93)
- Tuesday, July 27 2021 (Day 208)
- Monday, November 15 2021 (Day 319)
Schedule of Solar Events
Time of sunrise, sunset, dawn and dusk in Hanoi during 2021.
