| Name | When |
|---|---|
| Jackfruit Day | Jul 4 |
| National Jamaican Jerk Day | Oct 4th Sun |
| National Jamaican Patty Day | Aug 1st Sat |
| National Jambon Day (Ireland) | Mar 18 |
| Japanese Tea / Genmaicha Day (Japan) | Nov 1 |
| Japanese Tea Day (Japan) | 2X |
| Jell-O Week | Feb Sun of Wk. 2 |
| National Jelly Bean Day | Apr 22 |
| National Jelly-Filled Doughnut Day | Jun 8 |
| National Jerky Day | Jun 12 |
| Jersey Mike's Day of Giving | Mar Last Wed |
| World Jhatka Day | Sep 16 |
| World Jianbing Day | Apr 30 |
| National Joe Day | Mar 27 |
| Johan Ludvig Runeberg Day (Finland) | Feb 5 |
| Johnnie Walker Day | Jun 21 |
| National Johnny Appleseed Day | Mar 11 |
| Johnny Appleseed Day | Sep 26 |
| World Jollof Rice Day | Aug 22 |
| World Juice Day | May 30 |
| World Juice Day (Russia) | Sep 3rd Sat |
| National Juice Slush Day | May 3rd Wed |
| National Juicy Lucy Day | Sep 12 |
| Julia Child Day | Nov 3rd Thu |
| Julienne Fries Day | Aug 12 |
| July Belongs to Berries Month | Jul |
| National Jump for Jelly Beans Day | Jul 31 |
| National Junk Food Day | Jul 21 |
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