Famous Unix Timestamps Cheatsheet
Notable moments in computing history and their Unix timestamps. Perfect for testing, debugging, or impressing your colleagues.
Current Unix Timestamp
1770309778Upcoming Milestones
2 Billion Seconds
Two billion seconds since Unix epoch. A future milestone to celebrate!
May 18, 2033, 03:33:20 UTC
200000000032-bit Signed Max
The Y2038 problem. Maximum value for 32-bit signed integers causes overflow.
January 19, 2038, 03:14:07 UTC
214748364732-bit Unsigned Max
Maximum value for 32-bit unsigned integers. Systems using unsigned will fail here.
February 7, 2106, 06:28:15 UTC
4294967295Historic Milestones
COVID-19 Pandemic Declared
WHO declared COVID-19 a global pandemic.
March 11, 2020, 00:00:00 UTC
15839712001.5 Billion Seconds
One and a half billion seconds since Unix epoch.
July 14, 2017, 02:40:00 UTC
1500000000Bitcoin Genesis Block
Satoshi Nakamoto mined the first Bitcoin block, starting the cryptocurrency era.
January 3, 2009, 18:15:05 UTC
1231006505iPhone Announced
Steve Jobs unveiled the first iPhone at Macworld Conference.
January 9, 2007, 00:00:00 UTC
1168300800Facebook Founded
Mark Zuckerberg launched Facebook from his Harvard dorm room.
February 4, 2004, 00:00:00 UTC
10758528001 Billion Seconds
One billion seconds since the Unix epoch. Celebrated by Unix enthusiasts worldwide.
September 9, 2001, 01:46:40 UTC
1000000000Y2K
The millennium bug scare. Many systems transitioned to the year 2000 without major issues.
January 1, 2000, 00:00:00 UTC
946684800First Web Page
Tim Berners-Lee published the first website at CERN.
August 6, 1991, 00:00:00 UTC
681436800500 Million Seconds
Half a billion seconds since the Unix epoch.
November 5, 1985, 00:53:20 UTC
500000000GPS Epoch
The GPS system uses its own epoch, different from Unix time.
January 6, 1980, 00:00:00 UTC
315964800Apple Founded
Apple Computer Company was founded by Steve Jobs, Steve Wozniak, and Ronald Wayne.
April 1, 1976, 00:00:00 UTC
197164800First Email Sent
Approximate time of the first networked email, sent by Ray Tomlinson.
January 1, 1972, 00:00:00 UTC
63072000Unix Epoch
The beginning of Unix time. All timestamps are measured from this moment.
January 1, 1970, 00:00:00 UTC
0Quick Reference Table
| Timestamp | Date | Event | |
|---|---|---|---|
| 0 | January 1 | Unix Epoch | |
| 63072000 | January 1 | First Email Sent | |
| 197164800 | April 1 | Apple Founded | |
| 315964800 | January 6 | GPS Epoch | |
| 500000000 | November 5 | 500 Million Seconds | |
| 681436800 | August 6 | First Web Page | |
| 946684800 | January 1 | Y2K | |
| 1000000000 | September 9 | 1 Billion Seconds | |
| 1075852800 | February 4 | Facebook Founded | |
| 1168300800 | January 9 | iPhone Announced | |
| 1231006505 | January 3 | Bitcoin Genesis Block | |
| 1500000000 | July 14 | 1.5 Billion Seconds | |
| 1583971200 | March 11 | COVID-19 Pandemic Declared | |
| 2000000000 | May 18 | 2 Billion Seconds | |
| 2147483647 | January 19 | 32-bit Signed Max | |
| 4294967295 | February 7 | 32-bit Unsigned Max |