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Philadelphia is +1h ahead of St. Louis
Quick converter
FROM
St. Louis
United States
UTC-05:00
TO
Philadelphia
United States
UTC-04:00
Date-aware conversion
Result
Sun, Jun 21, 2026 04:25
St. Louis: Sunday, June 21, 2026 3:25 AM CDT to Philadelphia: Sunday, June 21, 2026 4:25 AM EDT.
Philadelphia is 1h ahead of St. Louis on this date
Every hour in St. Louis and the corresponding time in Philadelphia. Green rows indicate business hours in Philadelphia.
Time zones
St. Louis uses America/Chicago (CDT) and Philadelphia uses America/New_York (EDT). The difference can shift during daylight saving changes, so checking the exact date matters.
Best use
Use the green rows to spot normal working hours in Philadelphia. For teams across more cities, open the meeting planner and compare up to five locations.
Plan a meetingMeeting guidance
The easiest overlap starts around 9:00 AM and runs through 4:00 PM in the source city, while the destination city is also inside normal working hours. For important calls, check the meeting date because the offset can change when either location enters or leaves daylight saving time.
Compare meeting hoursQuick examples
City context
St. Louis is located in United States (North America). It uses the America/Chicago timezone with a standard offset of UTC-05:00. It observes DST, switching between CST and CDT. See the full St. Louis time page for live clock and planning details.
Philadelphia is located in United States (North America). It uses the America/New_York timezone with a standard offset of UTC-04:00. It observes DST, switching between EST and EDT. See the full Philadelphia time page for live clock and planning details.
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