The transit will take about five and a half hours and start at around 7:35 AM ET which in GMT is 12:35, according to NASA. If you’ve always wanted to see the phenomenon, now’s the time, as it won’t happen again until 2032 — and won’t be seen again in North and South America until 2049.
Mercury appears as a dainty dark spot moving across the sun, If you’re planning to check it out, however, you’ll need to take great care, see, your regular solar eclipse glasses won’t work here. “Because Mercury is so small from our perspective on Earth, you’ll need binoculars or a telescope with a sun filter to see it,” says NASA.
Should you not have one of those, “your local astronomy club may have an opportunity to see the transit using specialized, properly-filtered solar telescopes,” NASA notes. You can’t use a regular telescope or binoculars, even in conjunction with solar eclipse glasses, the space agency added.
If a physical viewing is out of the question, your best bet will be to go online. NASA’s Solar Dynamics Observatory satellite (SDO) will have the best possible view of the eclipse, and NASA will be broadcasting near-real-time views of the transit right here. To give you an idea of what you’ll see, you can check out the 2016 transit captured by the SDO above.