Sūrya-grahaṇam, Solar Eclipse
On August 12 a solar eclipse will be observed in Kanada, part of Nothern USA, Western Europe and partially Eastearn Europe, including a part of Ukraine and a part of the Europian territory of Russia (approximately from the line of Kiev and Moscow to the North-East). One can learn about the particulars of the eclipse in one's location from here or here. Note that NASA Website is often inaccurate as far as time zones are concerned.
During solar eclipse one shall not sleep, eat, drink or otherwise entertain oneself. Chanting stotras or mantras, listening to Śāstrās or discussing Śāstric matters, taking oblation in Tīrthās, etc. is the proper way of observing the time of eclipse. One have to take care that the light of the eclipsed Sun doesn't fall on any foodstuffs and into the innermost chamber of a temple. One should abstain from eating from the very morning till eclipse is over.
Those requirements are related to an eclipse potentially observable by a sādhaka in his location (including an eclipse which could be observed by him but for a clouded sky). An eclipse taking place elsewhere on Earth doesn't impose any specific set of actions.
Kindly direct your inquiries upon fasts and vratas, as well as corrections, suggestions, infromation on time zone changes, and requests to include new places for calculation to ekaadashii@gmail.com.
Ekādaśī-vratas are calculated with “Vaiṣṇavaṁ Pañchāṅgam”, created by Āśutoṣa. You may support the development of this software through Github "Sponsor" button (look for the heart symbol).
Respectfully yours,
Nārasiṁha