From 25th to 27th April in the town Loggia, together with the Hvar Primary School, Split Institute of Oceanography and Fishery and Hvar High School the Festival of Science was organized for the third time in Hvar. The theme of 15th Science Festival was "time" in a chronological or meteorological sense.

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On March 21, 2017, Bojan Vršnak gave in Hotel Esplanade Zagreb a public lecture on the space weather for the Rotary Club Zagreb. In the lecture entitled "Space Weather: How to Predict Solar Storms?" ('Svemirska meteorologija': Kako predvidjeti Sunčeve oluje?), he presented basic space-weather objectives, as well as the related research activity at the Hvar Observatory.

25th European Research Course on Atmospheres (ERCA) school was organized from 11th January to 9th February 2017 by Universite Joseph Fourier and CNRS in Grenoble, France. ERCA is a high level international course on the Physics and Chemistry of atmospheres, the climate system and climate change, atmospheric pollution at different scales and the human dimensions of environmental changes. The course also covers the solar influences on Earth's atmosphere and climate. This year, altogether 35 students were selected from all around the world to participate in ERCA. Jaša Čalogović was invited to give students two lectures ("Solar variability influences on the climate and cosmic ray - cloud link" and "A critical look at cosmic ray - cloud link: Forbush decreases and cloud cover"). Aim of lectures was to present the influences of solar activity on climate and the possible mechanisms linking the solar activity with climate. The cosmic ray - cloud hypothesis was also presented in detail with aim to show several potential problems in the present and past studies analyzing geophysical data using correlations.

From 18 to 25 July astronomy summer school for pupils was held in Josipdol, organized by Zagreb Observatory. Rich program included exercises, observation and lectures. M. Dumbović participated as one of the lecturers and gave a talk "Kozmičko zračenje i mi".

Jaša Čalogović visited the Institute of Physics, University of Graz from 5 to 8 July 2016, where he held a seminar "Cosmic rays and clouds: an important climate factor?" in which he presented his previous work, that connects the solar activity and the Earth's climate. During a visit to Graz further collaboration was arranged in order to analyze the impact of coronal holes on the Sun on changes in cosmic ray flux and geomagnetic field of the Earth.