Calculate Meaningful Days After Loss
Find the 40th day, 100th day, 1-year anniversary, and every meaningful milestone — across all traditions.
Enter the date of passing to see how many days have passed and which milestone is approaching next.
See every significant memorial date — from the 3rd day through the 7-year anniversary — with cultural context for each tradition.
How many days until the next death anniversary? Enter the date of passing to count down.
Why Memorial Dates Matter
After a death, time stops behaving the way it normally does. Some days blur together; others — the 40th day, the 100th day, the first anniversary — arrive with a weight that's hard to explain to anyone who hasn't lost someone close. Grief Calendar exists to take the arithmetic off your plate during a period when arithmetic is the last thing you want to think about. Enter one date, and every milestone that matters — across a dozen cultural and religious traditions — is calculated instantly and correctly, with the day of death counted consistently as Day 1.
Every family's mourning calendar looks a little different. Jewish tradition moves through shiva, shloshim, and Yahrzeit. Orthodox Christian, Filipino, and Slavic families gather on the 40th day. Korean, Chinese, and Vietnamese families mark the 100th day. Tibetan Buddhist and Japanese families observe the 49th day as the close of the bardo. Muslim families observe a 3-day hidad and, in many cultures, a 40-day gathering. None of these traditions are more "correct" than another — they're different, equally valid answers to the same universal need: a structure for grief that doesn't ask you to simply move on.
This calculator runs entirely in your browser — no dates are ever transmitted or stored — and it's free with no sign-up required. For a deeper look at what each milestone means and why, visit the memorial date guide, or jump straight to a dedicated calculator for the 40th day, 100th day, 1-year anniversary, Jewish mourning calendar, or Islamic mourning period.