Unix Timestamp 1616275515
seconds · 5 years ago
⚡ Quick Answer
1616275515 = Mar 20, 2021, 09:25:15 PM UTC
ISO 8601: 2021-03-20T21:25:15.000Z
Output Formats
ISO 8601
2021-03-20T21:25:15.000Z
RFC 2822
Sat, 20 Mar 2021 21:25:15 GMT
Human Readable
Saturday, March 20, 2021 at 09:25:15 PM UTC
Unix Seconds
1616275515
Unix Milliseconds
1616275515000
Day of Week
Saturday
Timezone Breakdown
UTC
Mar 20, 2021, 09:25:15 PM UTC
US Eastern
Mar 20, 2021, 05:25:15 PM EDT
US Pacific
Mar 20, 2021, 02:25:15 PM PDT
UK London
Mar 20, 2021, 09:25:15 PM GMT
Japan Tokyo
Mar 21, 2021, 06:25:15 AM GMT+9
Australia Sydney
Mar 21, 2021, 08:25:15 AM GMT+11
Related Timestamps
Frequently Asked Questions
What date is Unix timestamp 1616275515?
Unix timestamp 1616275515 represents Saturday, March 20, 2021 at 09:25:15 PM UTC. This is 5 years ago from the current time.
Is 1616275515 in seconds or milliseconds?
1616275515 has 10 digits, which means it is in seconds. Multiply by 1,000 to get milliseconds: 1616275515000.
How do I convert 1616275515 in JavaScript?
// Normalized to Unix seconds: 1616275515 const tsSec = 1616275515; new Date(tsSec * 1000).toISOString(); // "2021-03-20T21:25:15.000Z"
How do I convert 1616275515 in Python?
import datetime
ts = 1616275515
dt = datetime.datetime.fromtimestamp(
ts, tz=datetime.timezone.utc)
print(dt.isoformat())
# "2021-03-20T21:25:15.000Z"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.