South Plainfield in numbers
- Coordinates
- 40.5793, -74.4115
- Population
- 24 290
- Region
- New Jersey
- Country
- United States, North America
- Capital
- Washington, D.C. — 292 km away
See the local time in South Plainfield, New Jersey, United States right now, measured in the America/New_York time zone (−5).
South Plainfield, United States
Saturday, 7 November 2026
UTC−5 · America/New_York
Local time in South Plainfield
UTC−5 · no daylight saving time
South Plainfield keeps America/New_York clock_time.
Sunrise 6:36 AM Solar noon 11:42 AM Sunset 4:49 PM Daylight 10 h 13 min Night 13 h 47 min Civil twilight 6:07 AM – 5:18 PM
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Weather data by Open-Meteo, updated every 30 minutes.
Postal codes come from the free GeoNames dataset. Where a code is listed with a distance, it belongs to a nearby settlement — GeoNames spells that name differently from ours.
Anyone in Borough Of Dunellen or Dunellen reads the same clock as South Plainfield.
1 postal code covers the territory of South Plainfield.
Local timekeeping in South Plainfield uses America/New_York, equal to UTC−5. Summer clock change: No.
Today, South Plainfield has first light at 6:36 AM and last light at 4:49 PM. Daylight lasts 10 h 13 min.