Unix Timestamp 1643364800
seconds · 4 years ago
⚡ Quick Answer
1643364800 = Jan 28, 2022, 10:13:20 AM UTC
ISO 8601: 2022-01-28T10:13:20.000Z
Output Formats
ISO 8601
2022-01-28T10:13:20.000Z
RFC 2822
Fri, 28 Jan 2022 10:13:20 GMT
Human Readable
Friday, January 28, 2022 at 10:13:20 AM UTC
Unix Seconds
1643364800
Unix Milliseconds
1643364800000
Day of Week
Friday
Timezone Breakdown
UTC
Jan 28, 2022, 10:13:20 AM UTC
US Eastern
Jan 28, 2022, 05:13:20 AM EST
US Pacific
Jan 28, 2022, 02:13:20 AM PST
UK London
Jan 28, 2022, 10:13:20 AM GMT
Japan Tokyo
Jan 28, 2022, 07:13:20 PM GMT+9
Australia Sydney
Jan 28, 2022, 09:13:20 PM GMT+11
Related Timestamps
Frequently Asked Questions
What date is Unix timestamp 1643364800?
Unix timestamp 1643364800 represents Friday, January 28, 2022 at 10:13:20 AM UTC. This is 4 years ago from the current time.
Is 1643364800 in seconds or milliseconds?
1643364800 has 10 digits, which means it is in seconds. Multiply by 1,000 to get milliseconds: 1643364800000.
How do I convert 1643364800 in JavaScript?
// Normalized to Unix seconds: 1643364800 const tsSec = 1643364800; new Date(tsSec * 1000).toISOString(); // "2022-01-28T10:13:20.000Z"
How do I convert 1643364800 in Python?
import datetime
ts = 1643364800
dt = datetime.datetime.fromtimestamp(
ts, tz=datetime.timezone.utc)
print(dt.isoformat())
# "2022-01-28T10:13:20.000Z"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.