Length of Days in Lisboa
We show daylight length in Lisboa during 2020 and the equinoxes and solstices. From June 1, 2020 until June 20, 2020, daylight becomes longer. From June 21, 2020 until December 21, 2020, daylight becomes shorter. From December 22, 2020 until June 1, 2021, daylight becomes longer.
Equation of Time vs Day of the Year
We show the equation of time during 2020. 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 Friday, September 11 2020.
The day with the highest positive value is Thursday, June 4 2020.
Apparent solar time and mean solar time are of the same length on the following days of the year:
- Sunday, January 12 2020 (Day 12)
- Thursday, April 2 2020 (Day 93)
- Sunday, July 26 2020 (Day 208)
- Saturday, November 14 2020 (Day 319)
Schedule of Solar Events
Time of sunrise, sunset, dawn and dusk in Lisboa during 2020.
