| Term | Definition / Meaning / Stand for |
| NRTZ |
Nauru Time Zone |
| NRT |
Nauru Time |
| NPTL |
Nepal Precision Time Local |
| NPT |
Nepal Time |
| NCLT |
New Caledonia Local Time |
| NCTD |
New Caledonia Time Daylight |
| NCTZ |
New Caledonia Time Zone |
| NCT |
New Caledonia Time |
| NET |
New Eastern Time |
| NMDT |
New Meridian Daylight Time |
| NMLT |
New Meridian Local Time |
| NMZ |
New Meridian Zone |
| NZDT |
New Zealand Daylight Time |
| NZLT |
New Zealand Local Time |
| NMTD |
New Zealand Mean Time Daylight |
| NMTZ |
New Zealand Mean Time Zone |
| NMT |
New Zealand Mean Time |
| NZST |
New Zealand Standard Time |
| NDTL |
Newfoundland Daylight Time Local |
| NDT |
Newfoundland Daylight Time |
| NST |
Newfoundland Standard Time |
| NBLT |
Night Base Local Time |
| NBT |
Night Base Time |
| NLT |
Night Local Time |
| NUT |
Niue Time |
| NUTL |
Niue Universal Local Time |
| NUST |
Niue Universal Standard Time |
| NFTZ |
Norfolk Time Zone |
| NFT |
Norfolk Time |
| NOR |
Normal Time |
| NASTD |
North American Standard Time Daylight |
| NASTLZ |
North American Standard Time Local Zone |
| NASTL |
North American Standard Time Local |
| NAST |
North American Standard Time |
| NALT |
North Atlantic Local Time |
| NAT |
North Atlantic Time |
| NESTD |
North Eastern Standard Time Daylight |
| NESTL |
North Eastern Standard Time Local |
| NEST |
North Eastern Standard Time |
| NEUT |
North European Universal Time |
| NOPT |
North Optical Precision Time |
| NUPTZ |
North Universal Precision Time Zone |
| NUPT |
North Universal Precision Time |
| NNDT |
Northern National Daylight Time |
| NNLTZ |
Northern National Local Time Zone |
| NNLT |
Northern National Local Time |
| NNMT |
Northern National Mean Time |
| NNST |
Northern National Standard Time |
| NWTZ |
Northwest Time Zone |
| NWT |
Northwest Time |
| NDST |
New Digital Standard Time |