Unix Timestamp 343580400
seconds · 45 years ago
⚡ Quick Answer
343580400 = Nov 20, 1980, 03:00:00 PM UTC
ISO 8601: 1980-11-20T15:00:00.000Z
Output Formats
ISO 8601
1980-11-20T15:00:00.000Z
RFC 2822
Thu, 20 Nov 1980 15:00:00 GMT
Human Readable
Thursday, November 20, 1980 at 03:00:00 PM UTC
Unix Seconds
343580400
Unix Milliseconds
343580400000
Day of Week
Thursday
Timezone Breakdown
UTC
Nov 20, 1980, 03:00:00 PM UTC
US Eastern
Nov 20, 1980, 10:00:00 AM EST
US Pacific
Nov 20, 1980, 07:00:00 AM PST
UK London
Nov 20, 1980, 03:00:00 PM GMT
Japan Tokyo
Nov 21, 1980, 12:00:00 AM GMT+9
Australia Sydney
Nov 21, 1980, 02:00:00 AM GMT+11
Related Timestamps
Frequently Asked Questions
What date is Unix timestamp 343580400?
Unix timestamp 343580400 represents Thursday, November 20, 1980 at 03:00:00 PM UTC. This is 45 years ago from the current time.
Is 343580400 in seconds or milliseconds?
343580400 has 9 digits, which means it is in seconds. Multiply by 1,000 to get milliseconds: 343580400000.
How do I convert 343580400 in JavaScript?
// Normalized to Unix seconds: 343580400 const tsSec = 343580400; new Date(tsSec * 1000).toISOString(); // "1980-11-20T15:00:00.000Z"
How do I convert 343580400 in Python?
import datetime
ts = 343580400
dt = datetime.datetime.fromtimestamp(
ts, tz=datetime.timezone.utc)
print(dt.isoformat())
# "1980-11-20T15:00:00.000Z"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.