2025 Unix Timestamps
Unix timestamps for the start of each month in 2025. January 1, 2025 00:00:00 UTC = 1735689600.
January 2025 (local)Jan 1, 2025, 12:00:00 AM UTC
1,735,689,600s
February 2025 (local)Feb 1, 2025, 12:00:00 AM UTC
1,738,368,000s
March 2025 (local)Mar 1, 2025, 12:00:00 AM UTC
1,740,787,200s
April 2025 (local)Apr 1, 2025, 12:00:00 AM UTC
1,743,465,600s
May 2025 (local)May 1, 2025, 12:00:00 AM UTC
1,746,057,600s
June 2025 (local)Jun 1, 2025, 12:00:00 AM UTC
1,748,736,000s
July 2025 (local)Jul 1, 2025, 12:00:00 AM UTC
1,751,328,000s
August 2025 (local)Aug 1, 2025, 12:00:00 AM UTC
1,754,006,400s
September 2025 (local)Sep 1, 2025, 12:00:00 AM UTC
1,756,684,800s
October 2025 (local)Oct 1, 2025, 12:00:00 AM UTC
1,759,276,800s
November 2025 (local)Nov 1, 2025, 12:00:00 AM UTC
1,761,955,200s
December 2025 (local)Dec 1, 2025, 12:00:00 AM UTC
1,764,547,200s
Start of 2026 (year-end boundary, local)Jan 1, 2026, 12:00:00 AM UTC
1,767,225,600s
2025 year boundaries
Start of 2025: 1735689600 (January 1, 2025 00:00:00 UTC). Start of 2026 (exclusive year-end boundary): 1767225600. 2025 is a common year with 365 days.
Quarter and half-year boundaries
Quarter and half-year boundaries for 2025 in UTC. Use these for quarter-over-quarter reports, fiscal queries, and BI dashboards. All values are seconds since the Unix epoch.
- Q1 start (Jan 1): 2025-01-01 00:00:00 UTC = 1735689600
- Q2 start (Apr 1): 2025-04-01 00:00:00 UTC = 1743465600
- H1 end / Q3 start (Jul 1): 2025-07-01 00:00:00 UTC = 1751328000
- Q4 start (Oct 1): 2025-10-01 00:00:00 UTC = 1759276800
- Year end (Dec 31 23:59:59): 2025-12-31 23:59:59 UTC = 1767225599
- Next year start (Jan 1, 2026): 1767225600
Code: get the start and end of 2025 as epoch
One-liners for computing year boundary timestamps in popular languages. All return UTC seconds; multiply by 1000 for milliseconds.
- JavaScript: Math.floor(Date.UTC(2025, 0, 1) / 1000) // → 1735689600
- Python: int(datetime(2025, 1, 1, tzinfo=timezone.utc).timestamp()) // → 1735689600
- Go: time.Date(2025, 1, 1, 0, 0, 0, 0, time.UTC).Unix() // → 1735689600
- Java: ZonedDateTime.of(2025, 1, 1, 0, 0, 0, 0, ZoneOffset.UTC).toEpochSecond()
- PostgreSQL: SELECT EXTRACT(EPOCH FROM '2025-01-01 00:00:00 UTC'::timestamptz)::bigint
- SQL Server: DATEDIFF_BIG(SECOND, '1970-01-01', '2025-01-01')
- Shell (Linux): date -u -d '2025-01-01 00:00:00 UTC' +%s
Notable dates in 2025
Common reference moments in 2025 in UTC seconds. Useful for testing range queries, charting historical events, and verifying DST transitions.
- January 1, 2025 00:00 UTC (year start): 1735689600
- US DST starts — second Sunday of March 07:00 UTC: 1742108400 (02:00 EST → 03:00 EDT)
- US DST ends — first Sunday of November 06:00 UTC: 1762063200 (02:00 EDT → 01:00 EST)
- December 31, 2025 23:59:59 UTC (year end, inclusive): 1767225599
- Days in 2025: 365 (common year — no Feb 29)
- ISO week 1 begins on the Monday of the week containing Jan 4, 2025