Length of Days in Vostok
We show daylight length in Vostok during 2017 and the dates of equinoxes and solstices. From June 1, 2017 until August 20, 2017 daylight does not vary. From August 21, 2017 until October 19, 2017 daylight becomes longer. From October 20, 2017 until February 21, 2018 daylight does not vary. From February 22, 2018 until April 23, 2018 daylight becomes shorter. From April 24, 2018 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 Wednesday, September 13 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:
- Thursday, January 12 2017 (Day 12)
- Monday, April 3 2017 (Day 93)
- Thursday, July 27 2017 (Day 208)
- Wednesday, November 15 2017 (Day 319)
Schedule of Solar Events
Time of sunrise, sunset, dawn and dusk in Vostok during 2017.
- From April 7, 2017 until November 7, 2017, astronomical Dawn does not occur.
- From April 7, 2017 until November 7, 2017, night does not occur.
- From April 8, 2017 until November 6, 2017, night does not occur.
- From April 8, 2017 until November 6, 2017, astronomical Dusk does not occur.
- From April 23, 2017 until October 23, 2017, nautical Dawn does not occur.
- From April 23, 2017 until October 21, 2017, nautical Dusk does not occur.
- From January 1, 2017 until March 4, 2017, civil Dusk does not occur.
- From January 1, 2017 until March 4, 2017, civil Dawn does not occur.
