Unix Timestamp 438136800
seconds · 42 years ago
⚡ Quick Answer
438136800 = Nov 20, 1983, 12:40:00 AM UTC
ISO 8601: 1983-11-20T00:40:00.000Z
Output Formats
ISO 8601
1983-11-20T00:40:00.000Z
RFC 2822
Sun, 20 Nov 1983 00:40:00 GMT
Human Readable
Sunday, November 20, 1983 at 12:40:00 AM UTC
Unix Seconds
438136800
Unix Milliseconds
438136800000
Day of Week
Sunday
Timezone Breakdown
UTC
Nov 20, 1983, 12:40:00 AM UTC
US Eastern
Nov 19, 1983, 07:40:00 PM EST
US Pacific
Nov 19, 1983, 04:40:00 PM PST
UK London
Nov 20, 1983, 12:40:00 AM GMT
Japan Tokyo
Nov 20, 1983, 09:40:00 AM GMT+9
Australia Sydney
Nov 20, 1983, 11:40:00 AM GMT+11
Related Timestamps
Frequently Asked Questions
What date is Unix timestamp 438136800?
Unix timestamp 438136800 represents Sunday, November 20, 1983 at 12:40:00 AM UTC. This is 42 years ago from the current time.
Is 438136800 in seconds or milliseconds?
438136800 has 9 digits, which means it is in seconds. Multiply by 1,000 to get milliseconds: 438136800000.
How do I convert 438136800 in JavaScript?
// Normalized to Unix seconds: 438136800 const tsSec = 438136800; new Date(tsSec * 1000).toISOString(); // "1983-11-20T00:40:00.000Z"
How do I convert 438136800 in Python?
import datetime
ts = 438136800
dt = datetime.datetime.fromtimestamp(
ts, tz=datetime.timezone.utc)
print(dt.isoformat())
# "1983-11-20T00:40:00.000Z"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.