Unix Timestamp 104144400
seconds · 53 years ago
⚡ Quick Answer
104144400 = Apr 20, 1973, 09:00:00 AM UTC
ISO 8601: 1973-04-20T09:00:00.000Z
Output Formats
ISO 8601
1973-04-20T09:00:00.000Z
RFC 2822
Fri, 20 Apr 1973 09:00:00 GMT
Human Readable
Friday, April 20, 1973 at 09:00:00 AM UTC
Unix Seconds
104144400
Unix Milliseconds
104144400000
Day of Week
Friday
Timezone Breakdown
UTC
Apr 20, 1973, 09:00:00 AM UTC
US Eastern
Apr 20, 1973, 04:00:00 AM EST
US Pacific
Apr 20, 1973, 01:00:00 AM PST
UK London
Apr 20, 1973, 10:00:00 AM GMT+1
Japan Tokyo
Apr 20, 1973, 06:00:00 PM GMT+9
Australia Sydney
Apr 20, 1973, 07:00:00 PM GMT+10
Related Timestamps
Frequently Asked Questions
What date is Unix timestamp 104144400?
Unix timestamp 104144400 represents Friday, April 20, 1973 at 09:00:00 AM UTC. This is 53 years ago from the current time.
Is 104144400 in seconds or milliseconds?
104144400 has 9 digits, which means it is in seconds. Multiply by 1,000 to get milliseconds: 104144400000.
How do I convert 104144400 in JavaScript?
// Normalized to Unix seconds: 104144400 const tsSec = 104144400; new Date(tsSec * 1000).toISOString(); // "1973-04-20T09:00:00.000Z"
How do I convert 104144400 in Python?
import datetime
ts = 104144400
dt = datetime.datetime.fromtimestamp(
ts, tz=datetime.timezone.utc)
print(dt.isoformat())
# "1973-04-20T09:00:00.000Z"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.