Chicago to Lake Ronkonkoma time converter

Lake Ronkonkoma is 1 hour ahead of Chicago. When it is 9:00 AM in Chicago, it is 10:00 AM in Lake Ronkonkoma.

Chicago CDT

Wednesday, October 21, 2026

Lake Ronkonkoma EDT

Wednesday, October 21, 2026

Chicago
Illinois, United States
Wed, Oct 21
CDTUTC-5
Lake Ronkonkoma
New York, United States
Wed, Oct 21
EDTUTC-4+1h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to Lake Ronkonkoma conversion table

Every hour of today in Chicago and the matching time in Lake Ronkonkoma. Light rows are typical working hours (9:00–18:00).

ChicagoLake Ronkonkoma
12:00 AM1:00 AM
1:00 AM2:00 AM
2:00 AM3:00 AM
3:00 AM4:00 AM
4:00 AM5:00 AM
5:00 AM6:00 AM
6:00 AM7:00 AM
7:00 AM8:00 AM
8:00 AM9:00 AM
9:00 AM10:00 AM
10:00 AM11:00 AM
11:00 AM12:00 PM
12:00 PM1:00 PM
1:00 PM2:00 PM
2:00 PM3:00 PM
3:00 PM4:00 PM
4:00 PM5:00 PM
5:00 PM6:00 PM
6:00 PM7:00 PM
7:00 PM8:00 PM
8:00 PM9:00 PM
9:00 PM10:00 PM
10:00 PM11:00 PM
11:00 PM12:00 AM+1 day

Best time to call or meet

Both sides are at work from 9:00 AM – 5:00 PM in Chicago (10:00 AM – 6:00 PM in Lake Ronkonkoma).

Daylight saving time and the difference

The difference changes during the year because Chicago and Lake Ronkonkoma switch clocks on different dates:

  • Oct 21, 2026 – Nov 1, 2026: +1h
  • Nov 1, 2026 – Nov 1, 2026: ±0
  • Nov 1, 2026 – Mar 14, 2027: +1h
  • Mar 14, 2027 – Mar 14, 2027: +2h
  • Mar 14, 2027 – Oct 21, 2027: +1h

Distance

Chicago and Lake Ronkonkoma are 1,216 km (756 miles) apart in a straight line.

More conversions

Lake Ronkonkoma to ChicagoChicago to New YorkChicago to LondonChicago to Los AngelesChicago to TorontoChicago to São PauloChicago to ParisChicago to BerlinChicago to MoscowChicago to DubaiChicago to New DelhiChicago to BangkokChicago to Singapore
New York to Lake RonkonkomaLondon to Lake RonkonkomaLos Angeles to Lake RonkonkomaToronto to Lake RonkonkomaSão Paulo to Lake RonkonkomaParis to Lake RonkonkomaBerlin to Lake RonkonkomaMoscow to Lake RonkonkomaDubai to Lake RonkonkomaNew Delhi to Lake RonkonkomaBangkok to Lake RonkonkomaSingapore to Lake Ronkonkoma

Questions and answers

What is the time difference between Chicago and Lake Ronkonkoma?

Lake Ronkonkoma is 1 hour ahead of Chicago.

What time is it in Lake Ronkonkoma when it is 9 AM in Chicago?

When it is 9:00 AM in Chicago, it is 10:00 AM in Lake Ronkonkoma.

When is the best time to call Lake Ronkonkoma from Chicago?

Both sides are at work from 9:00 AM – 5:00 PM in Chicago (10:00 AM – 6:00 PM in Lake Ronkonkoma).

Does the time difference between Chicago and Lake Ronkonkoma change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.