Unix Timestamp 990355600
seconds · 25 years ago
⚡ Quick Answer
990355600 = May 20, 2001, 10:46:40 AM UTC
ISO 8601: 2001-05-20T10:46:40.000Z
Output Formats
ISO 8601
2001-05-20T10:46:40.000Z
RFC 2822
Sun, 20 May 2001 10:46:40 GMT
Human Readable
Sunday, May 20, 2001 at 10:46:40 AM UTC
Unix Seconds
990355600
Unix Milliseconds
990355600000
Day of Week
Sunday
Timezone Breakdown
UTC
May 20, 2001, 10:46:40 AM UTC
US Eastern
May 20, 2001, 06:46:40 AM EDT
US Pacific
May 20, 2001, 03:46:40 AM PDT
UK London
May 20, 2001, 11:46:40 AM GMT+1
Japan Tokyo
May 20, 2001, 07:46:40 PM GMT+9
Australia Sydney
May 20, 2001, 08:46:40 PM GMT+10
Related Timestamps
Frequently Asked Questions
What date is Unix timestamp 990355600?
Unix timestamp 990355600 represents Sunday, May 20, 2001 at 10:46:40 AM UTC. This is 25 years ago from the current time.
Is 990355600 in seconds or milliseconds?
990355600 has 9 digits, which means it is in seconds. Multiply by 1,000 to get milliseconds: 990355600000.
How do I convert 990355600 in JavaScript?
// Normalized to Unix seconds: 990355600 const tsSec = 990355600; new Date(tsSec * 1000).toISOString(); // "2001-05-20T10:46:40.000Z"
How do I convert 990355600 in Python?
import datetime
ts = 990355600
dt = datetime.datetime.fromtimestamp(
ts, tz=datetime.timezone.utc)
print(dt.isoformat())
# "2001-05-20T10:46:40.000Z"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.