As the fourth anniversary of the Covid lockdowns approaches, we’re collecting stories of the moments readers’ worlds shut down.

Remembering life in the earliest days of the pandemic shutdowns can feel like trying to conjure an apocalyptic dream: the empty streetscapes, the shrieking ambulances, the sudden scramble to find toilet paper and hand sanitizer.

As the fourth anniversary of the Covid-19 pandemic approaches, The Times wants to know: When did the pandemic hit home for you? What do you remember thinking, feeling and seeing in those turbulent early days of March 2020? Do you still have photos on your camera roll from your first time wearing a mask, or heading to work as an essential employee while the rest of the world hunkered down?

Maybe you were coming to the realization that your usual routines and habits — going to an office, shopping casually, dining out with friends — were over for an indeterminate amount of time. Or perhaps the reality of the pandemic came on suddenly, as you or a loved one got sick.

If you have a story to share, please fill out the form below and briefly tell us about your experience. Your response may be used in an story about the anniversary of the pandemic.

When did Covid hit home?