| Abbreviation | Definition |
|---|---|
| ITGD | International Tourist Guide Day |
| ITHD | International Tom Hanks Day |
| ITLAPD | International Talk Like a Pirate Day |
| JDN | Julian Day Number |
| JHD | Join Hands Day |
| JT | January Twenty |
| KW | KalenderWoche (calendar week) |
| KYB | keyboard |
| LYPD | London Young Peoples Day |
| M | Monday |
| MAW | Math Awareness Week |
| MCM | Man Crush Monday |
| MDH | Month, Day, And Hour |
| M-F | Monday Through Friday |
| MHW | Men's Health Week |
| MI | MIttwoch |
| MID | Mexican Independence Day |
| MJD | Modified Julian Date |
| MO | Monday |
| MO | MOntag |