Solar Year Calendar 2017 (Tonga)

Length of Days in Nukuʻalofa

We show daylight length in Nukuʻalofa during 2017 and the dates of equinoxes and solstices. From June 1, 2017 until May 31, 2018 daylight does not vary.

Equation of Time vs Day of the Year

We show the equation of time during 2017. 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 Thursday, September 14 2017.

The day with the highest positive value is Monday, June 5 2017.

Apparent solar time and mean solar time are of the same length on the following days of the year:

1. Friday, January 13 2017 (Day 13)
2. Tuesday, April 4 2017 (Day 94)
3. Friday, July 28 2017 (Day 209)
4. Thursday, November 16 2017 (Day 320)

Schedule of Solar Events

Time of sunrise, sunset, dawn and dusk in Nukuʻalofa during 2017.