Unix Timestamp 1001040400
seconds · 24 years ago
⚡ Quick Answer
1001040400 = Sep 21, 2001, 02:46:40 AM UTC
ISO 8601: 2001-09-21T02:46:40.000Z
Output Formats
ISO 8601
2001-09-21T02:46:40.000Z
RFC 2822
Fri, 21 Sep 2001 02:46:40 GMT
Human Readable
Friday, September 21, 2001 at 02:46:40 AM UTC
Unix Seconds
1001040400
Unix Milliseconds
1001040400000
Day of Week
Friday
Timezone Breakdown
UTC
Sep 21, 2001, 02:46:40 AM UTC
US Eastern
Sep 20, 2001, 10:46:40 PM EDT
US Pacific
Sep 20, 2001, 07:46:40 PM PDT
UK London
Sep 21, 2001, 03:46:40 AM GMT+1
Japan Tokyo
Sep 21, 2001, 11:46:40 AM GMT+9
Australia Sydney
Sep 21, 2001, 12:46:40 PM GMT+10
Related Timestamps
Frequently Asked Questions
What date is Unix timestamp 1001040400?
Unix timestamp 1001040400 represents Friday, September 21, 2001 at 02:46:40 AM UTC. This is 24 years ago from the current time.
Is 1001040400 in seconds or milliseconds?
1001040400 has 10 digits, which means it is in seconds. Multiply by 1,000 to get milliseconds: 1001040400000.
How do I convert 1001040400 in JavaScript?
// Normalized to Unix seconds: 1001040400 const tsSec = 1001040400; new Date(tsSec * 1000).toISOString(); // "2001-09-21T02:46:40.000Z"
How do I convert 1001040400 in Python?
import datetime
ts = 1001040400
dt = datetime.datetime.fromtimestamp(
ts, tz=datetime.timezone.utc)
print(dt.isoformat())
# "2001-09-21T02:46:40.000Z"What is the Unix timestamp for right now?
Use our live timestamp converter to get the current Unix timestamp. In JavaScript: Math.floor(Date.now() / 1000). In Python: int(time.time()). In bash: date +%s.
Need to convert a different timestamp?
Our full converter supports seconds, milliseconds, microseconds, 25+ timezones, and auto-detection.
Open Full Converter →Related Guides & Tutorials
// developers also readComplete Guide to Unix Timestamp Precision in 2026
The definitive guide to Unix timestamp precision, formats, and edge cases in production.
Unix Timestamps in JavaScript
Date.now(), the Temporal API, and timezone-aware timestamp handling in JavaScript.
Session Management with Timestamp Expiration
JWT expiration, session timeouts, and token refresh using Unix timestamps.